building better brains.

through our Brainstem™ products, bullsitoy aims to inspire children to think creatively,

indulge in curiosity, and acquire knowledge

through play.


become a mad scientist and Experiment with Goo Lab! Pearl putty has a pearl-like sheen, and is HOURS OF CREATIVE FUN WITH NO STICKY putty RESIDUE! SUPER SMOOTH, SHIMMERING, and IRIDESCENT PINK! collect them all!

become a mad scientist and Experiment with Goo Lab! UV Reactive putty changes color when exposed to UV light, and is HOURS OF CREATIVE FUN WITH NO STICKY putty RESIDUE! START DOODLING! SHINE THE LED LIGHT and WATCH PUTTY CHANGE COLORS! collect them all!

become a mad scientist and Experiment with Goo Lab! Glow putty glows in the dark, and is HOURS OF CREATIVE FUN WITH NO STICKY putty RESIDUE! PLACE IN DIRECT SUNLIGHT FOR 20 MINUTES to UNLOCK THE GLOW! collect them all!

become a mad scientist and Experiment with Goo Lab! Crystal putty is clear as glass, and is HOURS OF CREATIVE FUN WITH NO STICKY putty RESIDUE! FOGGY PUTTY? LET SETTLE and WATCH TURN CRAZY CRYSTAL CLEAR IN MINUTES! collect them all!

Block2bot is a puzzle cube that will not only tease your brain, but transform into a fully-posable robot! collect all 3 Bots and solve them with your friends! twist and lock from block to bot!

Bring out your inner paleontologist! each skele-tube comes with a skeleton of an extinct animal and a fact sheet on every label! How much does a Mammoth weigh? How tall is a Velociraptor? collect all 6 extinct animal Skeletons to find out!

Goo is coming to you in an out of this world way! each planet in our solar system is now made of goo for you to play with. collect all 9 planets...yes, we included the sun too...and learn about each one. every box contains a capsule of goo as well as a planetary collector card. it's a whole new way to learn about our universe!

FLip, stack, fold, repeat! mobius cube is an incredibly addictive fidget device that you won't be able to put down! mobius the actual term for the infinity symbol which perfectly describes these cubes. three different color to collect! once you pick it up, you won't be able to put it back down.

                 
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