I've found mine curled up under her water bowl (right after I refill it so now all the water's dumped out onto her substrate) quite a few times. It was a shock the first time it happened - I thought she'd escaped! She wasn't under her hot side so I checked the cool. Wasn't there, so I almost started to panic until I spotted a bit of her scales and her water bowl at a strange angle. Lifted it up and there she was! I've never seen her wrap her bowl, just hide under it. I have spotted our big boys doing it, though, for no real discernible reason.