A different kind of bun warmer
We use a towel as a bath mat, which Cuthbert loves to play with and scoot about the bathroom floor. Lately, I've been coming in to find this towel all shoved up over the heat register. Worried that this would impair the heating of the bathroom, I keep putting the towel back where it belongs, but it keeps winding up in the same place.
This evening, I went in the bathroom and discovered the why of it. Cuthbert was sound asleep upon the towel, directly over the heat register, all snug and warm. Huh! Dumb animal, my foot.