Here's something rare and also unusual.
It's classic, from some point in the 1990s, but even so much as a hint that it existed didn't turn up until this photo in 2020. The type of item is called a "See Saw Figure", but it's Sonic and....himself...on the play ground classic. Was this before Tails was added? The whole thing is supposedly made of metal (Even the figures?) and is well balanced so they can actually tip / teeter-totter in playground terms back and forth as they should. It is basically a desk-top balance toy with a Sonic theme. It doesn't make a lot of sense to have 2 of him (I mean at least put Eggman? Or maybe he only makes his end go down....hmm) and as you can see the photo isn't the greatest of it.

The crop is too close, you can't tell exactly what's going on, or see if their sculpts are same/different. Do note the unpainted shoe buckle also. You can write in for credit if you know more about this desk toy balancer.