Fidget toys with embedded puppy paws!
One is a mechanical contraption that involves two large and two small bevel gear cogs that all move independently thanks to hidden swivel mechanisms inside!
The other two are Kaledocycles! A ring(ish) you can turn inside-out continuously, despite the fact that it merely has a bunch of regular hinges between the parts. They're traditionally made from paper, where the underlying structure is more evident - a series of tetrahedra (six, in this case), which join via hinges.
All 3 are designs that are adapted (and licensed) from https://clockspring3d.com/ to have embedded puppy paws for extra cuteness.
