This Bone Buggy is very easy to print, no need to set up supports.

Look at the video! https://youtu.be/R6jEQZ6IDG8

No suppots needed. I suggest using walls with at least 3 perimeters. Make sure you have good adhesion to the print bed, if necessary use an additive, in my case I use a bit of strong hold hairspray. Glue the parts if you consider it necessary, you can do it with a drop of super glue.