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.