$20 to $50

The Gravitrax interactive track system harnesses the power of gravity, physics, and engineering in a unique marble-run. Enhance the adventure with ...

Master the art of illusion and amaze friends and family with 150 impressive magic tricks! A 96-page instruction manual with color photographs illus...

Curious kids experiment with strength and stability, building 20 models that demonstrate mechanical physics or structural engineering principles. T...

Keep shooting hoops past dusk with this motion-activated, LED-illuminated basketball! It's an official size basketball with a textured surface, mak...