Im building a beetle weight pneumatic flipper atm, pain in the backside :P

Everythings so small its hard to find fittings for it ect. Alot of the things needed are either gold dust or just not a simple off the shelf job. A pneumatic parts company i usually work with couldnt source a dump valve anywhere near small enough for example.

It can be done, its just not the easiest first build. Motors look good, but ill leave that to people with more experience to comment on tbh.