Hoberman Expanding Mini Sphere Toy. The Hoberman Expanding Mini-Sphere is an award winning toy that’s great for all ages. A sphere of multiple colors that you can throw, bounce, kick, spin, roll and suspend. It even expands from 5.5″ to 12″. Unique and eye-catching, these spheres inspire children to be creative and inventive. Dimensions: 6.50″ L x 6.50″ W x 6.25″ H Weight .5 lbs.