Look a little harder at Wally-World in the kitchen appliances. It took me awhile to find it but I did find a nice little digital timer there. It's about a 2 1/2 in square by less than a 1/2 in thick. Small & flat enough to attach to the back of my radio if I want to with velcro or double sided tape. It takes a couple of small AAA batteries & seems to do the trick quite nicely.