I'm trying to get my poor womans "home grooming salon" (i.e. my basement) up and running. Here's my set up - I wash the dogs in the bathtub upstairs then I take them down to the basement for their blow dry. I have a heavy duty desk down there with a piece of carpet on top that I put the dogs on top of. I'd like to get some sort of system to keep them up on the table and not wiggling around trying to get away.
Picture a metal desk like this:

With a piece of carpet on top. The desk is next to a concrete block wall so I really can't nail anything in to that. I need something to hold the dogs head and probably rear to keep them from trying to jump off. Any ideas?