building better brains.
through our Brainstem® products, bullsitoy aims to inspire children to think creatively,
indulge in curiosity, and acquire knowledge through play.


Great for the budding mad scientist, Goo lab has 5 different types of special putty to collect! Immerse yourself with these collectible compounds. Crystal, Pearl, Glow in the Dark, Magnetic and UV Reactive! Collect all 5 tins and start your experiments!

Mobius Cubes help keep your mind clear, and your hands occupied! Stainless steel bearings create a satisfying fold motion, and the sleek metallic designs make the Mobius Cube a premium fidget experience! Collect all 4 translucent colors! 1 Mobius Cube per hanger box.

Mobius Spinners can help keep your mind clear and your hands occupied! Stainless steel bearings create a lightning-fast spin! Sleek translucent designs make the Mobius Spinners a premium fidget experience! 1 in each hanger box, collect all 12 styles!

Simple to learn, but difficult to master! This fun, addictive puzzle sphere will keep you hooked while you mix, pop, and match colors for endless fidgeting fun! 1 in each box!

Magnet rings that relieves stress and distracts fidgety hands! These anti-stress magnetic rings will calm you immediately! They are fun to collect and double as a fidget tool. Each pack includes 3 electroplated styles to collect!

         
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