Party & Pillow
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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.

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$27$37

Pre-order price, $10 off. Yours within a week of ordering.

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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 signature moment

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.

Everything here arrives as print-ready PDFs with fill-in fields on the pages that need them, so you can add names, dates and details yourself before printing at home. Nothing is posted. It is written for a group of up to 16 guests, and the print-prep table walks you through 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.
Choose your ending

One kit. Two ways to end the night.

3 to 4 hours, no overnight

Party Path

Run the full Core Experience, follow the closing sequence, and have everyone ready for pickup. A complete themed party that ends at a sensible hour and leaves your house intact.

Core Experience plus overnight and morning

Sleepover Path

Everything in the Party Path, then keep going. Pajamas, movie and lounge time, snacks, bedtime, a slow morning, breakfast and pickup, all planned the same way the evening was.

Not sure yet? Choose on the night. Nothing you print or buy is wasted either way.

How it fits

Guided, Classic or Independent

Same night, three 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 kit

The 12 packs

Before the night

What you will need

A printer, regular paper, scissors, and a short shopping list of inexpensive supplies. The host guide gives you quantities and a cheaper substitution for every item. Cardstock is worth it for the photo booth props and the cut-out cards if you have it, but plain paper works for everything. The games themselves need nothing but what is already in your house.

Delivery

Want this one next?

We build these one at a time, and we build the ones people actually want. Pre-order this kit for $27 and it moves straight to the top of the list. It lands in your inbox within a week of your order, and you'll have paid $10 less than everyone who waits for it.

Changed your mind before it's ready? 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 kit hosts the whole group for $37 and you can print it again next year.

Print it, run the night, and if it does not hold up we will refund you. No forms, no photos, just reply to your delivery email.

Questions about Slime and Science Lab

This is the question the kit 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 kit

As much or as little as you want. There is a lot in this kit and you are not expected to print all of it. The print-prep table walks through every page, what it is for, and how many copies you would want, 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 the photo booth props and the cut-out cards, because kids wave those around all night. That is a nice-to-have, not a requirement.

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

Ages 8 through tween, in one kit. 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 host guide shows you where to add more support or more independence depending on the guest.

Yes. It is yours to print as many times as you want for your own family's parties. Please do not resell it, share the files, or use it to run parties as a business.

Not right now. We paused personalized experiences to focus on getting the kits right. The kit has fill-in fields on the pages that need them, so you can add names and details yourself.

Ready to print the night?

Your kit covers set-up, a full running order, host scripts, food ideas, and either a clean party ending or the whole next morning.

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$27 · Pre-order