Similar to Squishable Ace The Donut v2 (makerworld.com/models/138029) but without beads. The beads on the original model are a bit stingy. This version is much softer on the hands.

Walls, top and bottom layers, and infill are very thin to make it more pleasing to squish and fidget with. As such it will likely not print perfectly. Increase infill a bit and slow down external walls a bit more if you a perfect result.