I never used Blender before, so don't expect high quality!
I just took 2 projects on Thingiverse, a propeller and a buggy, imported them in Blender and added a few bits.

This is just explain the concept, I suppose the wheel would have to be much thin and light so that there is less weight to maintain stuck on the wall.

If a can of spray paint is used in the prototype, the nozzle must be protected from the wind of the propeller.