Gravic Cd Yo-Yo™
Transform old CDs into a fun toy.
Patent #6,533,636 B2 available for licensing. To request a sample Gravic Cd Yo-Yo kit with instructions please contact us.
The present invention provides for a spacer for building a toy yo-yo. The spacer comprises a central axis for receiving a tether string for wrapping around the central axis and two outer sidewalls. Each outer sidewall has an attachment hub located on the outer sidewall for receiving a compact disc.
