We're on a mission to make kids' birthdays weirder, messier, and more memorable
Born in the Lehigh Valley, built for families who want something different than a boring venue rental.
Cosmic Slime started with a simple observation: kids absolutely lose their minds for slime. And parents love watching them have that much fun — but nobody loves the cleanup. So we built something better.
We show up with a fully-stocked slime cart and run the whole party. Setup, instruction, activities, and full cleanup when we're done. Every kid walks away with their own creation.
It's part entertainment, part art project, and 100% memorable.
Mobile slime party entertainment, handled start to finish
We bring everything — you just provide the space and the kids. We handle the rest.
No Cleanup Stress
We set up, we run the activities, we pack up when we're done. Your house is exactly how we found it — except for the very happy kids.
All Supplies Included
Glue, activators, colors, glitter, charms, beads, scents, aprons, containers — everything comes with us. You don't need to buy a single thing.
1–2 Hours of Fun
Depending on the package, we run 1 to 2 hours of hands-on slime-making. Kids are engaged the entire time — guided by our team.
Family-run and locally owned
Cosmic Slime is a Lehigh Valley small business. We care about this community and about every family that invites us into their home. When you book with us, you're talking directly to the people who show up at your door — not a call center, not a franchise. Just real humans who want your kids to have the best party ever.
Ready to book your party's best hour?
Dates fill up fast — especially on weekends. Lock in your spot before someone else does.
Book Your Party →