Small as a book. Pops up into a full science lab, folds back flat for the shelf.
Monthly pop-up kits, pen pals worldwide, experiments, recipes, magic tricks. Kid‑owned, age 7.
Two minutes. Monthly, 3‑month, or Annual. Pen pal postcards from day one. Cancel anytime.
Book-sized kit lands in the mailbox. Pop it open and the lab unfolds. When you're done, fold it flat and slide it on the shelf.
Do the experiment, eat the recipe, write back to your pen pal, and post your video with #PopSciFun.
Not a box. A book-sized kit that pops open into a full lab, then folds flat for the shelf. What's inside changes every month. The point isn't a checklist of parts. The point is kids begging to open the next one.
Ships flat like a small hardcover. Pops open into trays, pockets, and a built-in workspace. Folds back flat when they're done.
Hands-on. Weird. Memorable. The way Caleb wishes science was taught at school. Kids finish the kit and teach the lesson back to you.
The one thing in every single kit. A handwritten card from another Young Scientist Club member. Could be Ohio. Could be Osaka. We shuffle by hand.
One month a chemistry experiment, the next a build challenge, the next a magic trick with real science under the hood. Surprise is half the fun.
Kids are happy to read and experiment when the experience is enjoyable, and that's what PopSciFun does best. Make Science Fun.
Send one as a birthday or holiday gift and watch it steal the show. A present grandparents can feel great about, because their grandkid is learning real science while having a blast.
All plans include the pop-up Mystery Curriculum kit and a pen pal postcard. What's inside changes every month, that's the point. No charge today. Your card is charged when your kit ships.
Month‑to‑month. Cancel any time. Founding member presale price locked in.
Founding member presale · becomes $29.99 after presale
No charge today. Your card is charged when your kit ships.
13 kits for $299. 12 monthly kits plus a FREE Holiday Science Spectacular kit shipping December 2026. Every annual funds 5 scholarship kits for kids in underserved communities.
Flat $299 · Includes Holiday Kit · Funds 5 scholarships · Founding member presale
No charge today. Your card is charged when your first kit ships.
Every annual subscription funds five PopSciFun kits for kids in communities that need them most. That's not a marketing line. It's math. We buy the kits, we ship them, we send you proof.
Scholarship kits are funded from annual subscription revenue. Not tax‑deductible - PopSciFun is not a 501(c)(3). Partner schools announced as onboarded.
Every kit includes a handwritten postcard from another Young Scientist Club member - Ohio, Osaka, wherever. We shuffle by hand. No addresses shared.
The postcard format removes all social pressure. No face‑to‑face. Just science, shared curiosity, and connection at their own pace. Thoughtfully designed for every kid - including kids on the autism spectrum or anyone who learns differently.
Homeschooled. Age 7 1/2. Loves Legos, origami, robots, and anything that fizzes. Wanted to find other kids who think science is as fun as he does, so he built a club and sent it through the mail.
I'm Caleb's dad. During the day I serve as a University Director of Innovation and Intellectual Property. After work I enjoy making my kids healthy food, teaching them about fitness, and most importantly, science. Recently Caleb and I decided to start a business - not a lemonade stand, an actual company.
"Best gift I have ever given my grandkids! PopSciFun is amazing from the first moment. The fact that it's built by a 7‑year‑old makes it even more special. Caleb gets kids in a way that big company kits do not."
Tap any card to watch. Every project is a teaser from a real kit - do them at home, then join the club to get the whole Mystery Curriculum in the mail.
What happens when you put marshmallows in a syringe? (Spoiler: science.)
Watch on TikTokOil, water, food coloring, and one fizzy tablet. Chemistry you can drink - okay, don't drink it.
Watch on YouTubeBuild a maze, race a magnet, and learn why iron acts weird near electricity.
Watch on TikTokTurn a phone camera into a microscope with one drop of water. Yes, really.
Watch on YouTubeHair‑raising physics. Dad got a shock. Caleb will not stop laughing.
Watch on InstagramCapillary action looks like magic. Cups, paper towels, food coloring - done.
Watch on TikTokEvery action has a reaction. Caleb tested this on Dad's coffee. Don't.
Watch on YouTubeSupercool a bottle of water. Tap it. Boom - frozen in one second.
Watch on TikTokRefraction, reflection, and a whole lot of spinning. Great rainy‑day move.
Watch on InstagramExplosive science kits. Pen pals worldwide. Scholarship kits funded. A community that tells every kid: you belong here.