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Slime and Science Lab

The lab opens tonight, and every one of them has a hypothesis worth testing.

A working laboratory arrives in your kitchen for one night. Goggles on, prediction cards filled in before anything is poured, stations run in rotation, results recorded, and a mystery formula to recover before lights-out. The slime is genuinely brilliant, but the feeling the children carry away is the one that lands when the jar changes color exactly the way they said it would, and the whole table turns to look at them.

  • Print at home
  • Download and keep forever
  • Overnight included
Get the party guide, $27

$27$37

Pre-order price, $10 off. Your link arrives within 7 days of ordering.

Slime and Science Lab sleepover setup — a printable welcome sign, teepees with name cushions in green, blue and purple, safety goggles, lanterns, jars of coloured slime, test tube racks, beakers, a microscope, a slime recipe card and a crystal-growing card.
The moment they'll talk about

At the moment you choose, the missing formula is recovered.

At the signature moment the lab opens the sealed Mystery Envelope and learns that a secret formula has gone missing. The clues cannot be guessed (each one is recovered by running an experiment correctly) so the group works the bench together until the formula is back in their hands.

The emotional core of this one is being the child who called it correctly. Real science, taken seriously, run properly, with the mess arriving as a bonus rather than the entire point.

Inside the experience

What the night includes

  • A themed welcome moment : Children arrive to a printable lab-assistant name badge, a goggles label with their name on it, and a briefing that opens the laboratory in front of the whole group.
  • The experiment programme : A run of stations (a color-change reaction, a fizzing reaction, a density station, a crystal-growing setup and the slime bench) with the host guide marking where to simplify for younger guests and where to add challenge for older ones, with every ingredient named in the plan.
  • Prediction and results cards : A prediction card per experiment, filled in before anything is mixed, and a results page to record what actually happened and why it might have differed.
  • Food and drink ideas : Science-themed snacks and drinks that look like laboratory work and are entirely, obviously edible, served at a table kept physically separate from every experiment station.

Your party guide opens on any device, and you can print any page of it. The printable pieces are inside your guide, ready to download and print. It's written for a group of up to 16 guests, and the Everything you'll print list in Start here shows which pages to print and how many copies.

Slime and Science Lab printable sleepover kit — a printable invitation, sleepover passport and name badge, experience cards for the slime station, science experiment, team challenge and lab creation, a lab badge sticker sheet, a mystery mission card, a welcome sign, a lab assistant goggles label and pots of slime.
Included with every guide

The party, and the whole night after it.

3 to 4 hours

Party Experience

A complete themed party from the first guest through pickup. Run it on its own and everyone heads home at a sensible hour.

Included with every guide

Sleepover Addition

Pajamas, movie and lounge time, snacks, bedtime, a slow morning, breakfast and pickup, all planned the same way the evening was. Use it when guests are staying over.

Not every night needs the overnight. Use it when guests are staying and skip it when they're not.

How it fits

Guided, Classic or Independent

Same night, 3 levels of host support. You pick the one that fits the group in front of you, and you can switch between them at any point in the evening.

More support

Guided

You explain more, demonstrate more, check in more often, and stay hands-on throughout. Good for a younger group, a first sleepover, or guests who don't know each other yet.

Balanced support

Classic

You introduce what guests need to know, help where it's useful, then give them room to take part on their own. Start here if you're not sure.

More guest independence

Independent

You set the expectations, the hygiene and the safety boundaries clearly, then let guests run more of the night themselves while you stay available.

Different guests can need different levels on the same night, and you never announce which one you're using. Guests just experience the night.

Inside the party guide

What you get

  1. Start here: A welcome to your night: the theme, what's included, how much work it is, and your first step. Your invitations are here too.
  2. Shopping and food lists: A shopping list and food plan scaled to your group size, with budget ranges.
  3. Per-child setup and printables: What each child needs, how many copies to print, and one assembly card so you never have to piece it together yourself.
  4. Shared printables and decorations: Signs, decorations and the shared game pieces you hold back until the right moment.
  5. Room setup: Where everything goes, zone by zone, plus a note on keeping food away from the activities.
  6. Hosting the party: A step-by-step plan from the first guest through goodbye, with what to say and what to have ready at each moment.
  7. Sleepover Addition: Included with every guide. The overnight that follows the party, for anyone staying over: a cozy wind-down, bedtime, quiet hours, breakfast and pickup.
Before the night

What you will need

A phone, tablet or computer to open your guide, a printer and regular paper for the printables, scissors, and a short shopping list of inexpensive supplies. Your guide scales the quantities to your group. Cardstock is worth it for the pieces kids wave around all night if you have it, but regular paper works for everything.

Delivery

When you get your private link

This guide is still being finished. Your private link arrives within 7 days, often sooner. We'll email you the moment it's ready.

Changed your mind before your link arrives? Reply to your confirmation email and we'll refund you in full, no questions.

The math

The math

A sleepover venue runs $30 to $50 per child. This party guide hosts the whole group for $37. Print any page of it, and the printables you download are yours to print again for your own family's parties.

Open it, run the night, and if it doesn't hold up, we'll refund you. No forms, no photos, just reply to your confirmation email.

Questions about Slime and Science Lab

This is the question this party guide was designed around, so the answer is deliberately specific. There's no borax powder, no boric acid and no laundry-booster powders in any recipe, at any difficulty. Those are the standard hazard in home slime and they're simply not part of the plan. Instead the recipes use ordinary school glue activated with contact-lens solution and bicarbonate of soda, plus a cornflour-based method with no activator at all for younger children or for anyone who'd rather skip activators entirely. Every ingredient is named in the plan so you can check it against your own household before you buy anything. Adults handle all measuring and pouring, gloves are offered at every station, hands are washed at the end of each station rather than at the end of the night, and nothing is left sitting on skin. Slime is never tasted or eaten.

Honestly: slime itself is not the stainer: the coloring is. The plan therefore specifies washable school glue and a small number of drops of food coloring or washable paint rather than concentrated pigments, and it tells you which colors to avoid entirely on light carpet. Setup guidance puts every wet station on a covered surface, keeps the slime bench away from soft furnishings, and asks for old clothes and tied-back hair. If slime does reach carpet, the plan includes the removal method: lift the bulk with a spoon rather than rubbing, work white vinegar or surgical spirit into what remains from the outside inwards, then blot with warm soapy water. It comes out. Hosts who follow the covered-surface setup usually finish the night with nothing worse than a wiped table.

Yes to both, and it's built into the plan rather than improvised on the night. For sensitive skin or eczema, gloves are available at every station, a patch test on the inside of a wrist is written in before a child works with a new mixture, contact time is kept short and hands are washed immediately afterwards. There's a fully gloved version of the slime bench too, if you want it. For a child with a sensory aversion to texture, the plan gives them real, high-status roles that never require touching anything: they measure, they time, they record results, they run the prediction cards, they present the findings. Several of the best stations are entirely dry, so a child who hates slime still finishes the night with a full passport and every badge.

None whatsoever, and the plan assumes exactly that. Every experiment comes with a host script written in plain language: what to put out, what to say, what order to do it in, what should happen, roughly how long it takes, and a short explanation you can read aloud if a child asks why. There is also a 'if it does not work' line for each one, because occasionally a reaction is sluggish and the recovery (turn it into a second prediction and try again with more of something) is genuinely better science than the original experiment. You are running a rotation and reading a card. The children do the thinking.

Questions about the party guide

Your private link arrives by email within 7 days of your order, often sooner. You can get a full refund any time before then.

As much or as little as you want. You can print any page of your guide, and your invitations, signs and game pieces are inside the guide, ready to download and print. The Everything you'll print list in Start here shows every printable by step, so you can pick the pieces that fit your night and skip the rest. Print the essentials this year and come back for the extras next time.

No. Everything works on a regular home printer and regular paper. A few pieces hold up better on cardstock, especially cut-out cards and props, because kids wave those around all night. That's a nice-to-have, not a requirement.

That's exactly who it's written for. The guide walks the night in order, gives a duration for each part, and gives you the words to say. You're never asked to make something up on the spot.

Ages 8 through tween, in one guide. This age range is where the activities actually land: old enough to run parts of the night themselves, young enough to still love the whole thing. The guide shows you where to add more support or more independence depending on the guest.

Everything you download or print is yours to keep and use for your own family's parties, forever. Your private link expires 12 months after we send it, so download what you want to keep before then.

Yes. Print any page of your guide, and the printables you download, as many times as you want for your own family's parties. Please don't resell them, share them, or use them to run parties as a business.

Ready to host the night?

Your party guide covers set-up, food, games and the finish, so you can enjoy the party too.

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