Attaching a wheel to a bin cage?

[Nktigger99]

I am trying to figure out if it is possible to attach a wheel to a bin cage. Right now I has a flying saucer and it works okay but she has been moving it around enough where it is wedged against the cage and won't turn. I came home from work last night(11:15pm) and she was acting pretty upset that her wheel wasn't working. She loves to tunnel in her bedding so that is what is the issue...She under minds the base of her wheel. I figured I can bypass this issue by mounting a wheel to the side of the bin. Any help would be appreciated? Oh she is a smal
Robo.

Thank you!