Oh I've done that a lot.
One of my personal favorite spots to fall asleep for a short nap at ANY opportunity I could get used to be on top of a number of rather uncomfortable boxes and old plywood boards in a crawlspace that was the size of a room but really only about 4ft-ish tall, that was under a larger audio booth for a projector. In particular, I slept under the stairs. It was very uncomfortable but I didn't give a damn, I was happy to get a nap.

Way back wehn I worked in a close outs store I made a fort out of couches that I could hide inside of and nap on my lunch break, its was the best xD

Any opportunity to get a nap is always the best~