Hey,
This is my model of the Volvo keychain.
It's compatible with MMU, but you can also use one extruder and manually change the filament (for the cut version, it's only 3 filament changes).

For the Print in Place version, you have to wait until the keychain cools down well and then start manipulating it until it starts rotating.

I am also attaching the version that is already cut.
Advantages of this solution:
- fewer changes of the filament
- smoother movement (you can sand the mechanism before assembling)
- both sides of the pendant will have the texture of the table

The cut version is best to be glued after printing.

I recommend using supports for the cut version.