Have you seen a coffee cup caddy? It could be made with generic prints. It is like what the guys put over a mud bucket to put tools in except it goes over a coffee cup. Goodwill has coffee cups for $1 or if it gets cold rice bags made from flannel that you warm in the microwave. Some people use for stiff neck etc. but I heat several and call them my "Bed Buddies" they warm the bed before I get in. Good luck