I've mounted wheels under an armchair. It's really good. For me at least. For years I had an old office chair. Got it used from a bank. I was happy with that.

I've mounted wheels under an armchair. It's really good. For me at least. For years I had an old office chair. Got it used from a bank. I was happy with that. But eventually it was worn out. Tried a lot of office chairs. Never found anything like it. One day it struck me. This armchair of mine, which I used to sit and read in for hours, why not put wheels under it. I did. Four sturdy rotating 4" wheels. Made the chair a little higher which is perfect.