These small racks are also useful for home internet appliance racks to hold your cable modem and router and even small home servers, all the way to a homelab.
They don’t have wheels and wheels right now cost more than the shelf. Easy to solve. Get the cheap 12 x 18in $12 furniture dolly at your local home store. Stack the rack on top, mark where the feet touch and drill out those spots slightly just to make a divot. The use long zip ties to secure the rack to the dolly. A single small ratchet strap can also work. That’s what I use.
Rack too small? Use scraps of plywood under the legs. That’s not the usual solution to “rack too small” but just go with it.
Bam. Not you have a rack on wheels. It looks weird in a bathroom but it is fine tucked in a garage or closet.