There are more files on printables for printing mmu with stl files and printing individual pieces on single extruder printers.

Orange from Rainbow Friends by Tdub5 (PrintNPlayToys) | Download free STL model | Printables.com

This is Orange from Rainbow Friends. He is about 100mm x 33mm x 75mm. (4" x 1" x 3").

This model does need a good amount of supports. I printed him with PLA and then used petg as a support interface, which helped a lot. I was able to print with tree supports, but not ‘slim’ tree supports. If they aren't sturdy enough, they would get knocked over.