So right now I have a homemade bucket wheel and it's working out splendidly except... when Turbo gets really excited and runs really fast, the wheel actually moves across the cage. It only goes a few inches before it hits a wall, but then it proceeds to bang against the side and make a really loud thumping noise until I move it. This is very annoying for me at 4 am.
I was thinking if I filled the base of the wheel with something it would be heavier and not slide around, but I don't know what to fill it with? Any ideas?