I’ve done a lot of toys this month that have been around for centuries. I would not have guessed how long yo-yos been around though. The earliest evidence of the yo-yo comes from a Greek urn that dates to around 400-500 BC. Yo-yos were even used by Napoleon and his troops as a form of stress relief. But when it comes to true educational value about yo-yos, nothing can beat the Twirl King Champions (which is a perfectly cromulent Simpsons reference, for those that are less nerdy than I).
Yo-Yo, 5″x5″, ink and watercolor on illustration board