I can't find a convenient place. The drawers are already full.
edit: Thank you all for the ideas. I'm not sure yet. It isn't something that I have used very much, although I may in the future. The bathroom is very small and the two drawers are full. So right now after reading all of the suggestions, I am leaning toward setting the dryer on top of the rest of the stuff in the back of the cabinet, and am considering attaching something to the cabinet door.