Hoberman Mini Sphere Rainbow Expanding Toy

The Hoberman Mini Sphere Rainbow Expanding Toy from University Games delivers Chuck Hoberman's iconic isokinetic-mechanism sphere in a kid-sized rainbow version that expands and contracts in the user's hands. Chuck Hoberman patented the original Hoberman Sphere design in the late 1980s, building an engineering curiosity into a physical toy that demonstrates geometric expansion principles without needing any explanation. The Mini Sphere brings the same mechanism down to a portable scale that fits in a backpack or stocking, with the rainbow colorway adding visual appeal for kids, from Hoberman.

• Mini-scale Hoberman Sphere in rainbow colorway
• Expands and contracts via isokinetic geometric mechanism
• Patented Chuck Hoberman design

Kids who already love mechanical curiosities will find the Mini Sphere delivers a satisfying expand-and-contract motion that holds attention across long fidget sessions, and parents shopping for a STEM-leaning gift will get a toy that doubles as a low-key engineering demonstration. The rainbow colorway also makes the sphere a recognizable item across kid party-favor and stocking-stuffer scenarios. The Hoberman Sphere format also appears in museum gift shops and science-and-technology gift catalogs, which signals the toy's credibility as both a play piece and a teaching tool. The Hoberman Sphere format also tends to spark questions about how the mechanism works, which gives parents an entry point for conversations about geometry and engineering with curious kids.