I have a quick idea.
Use some pine (maybe southern yellow pine) or any wood with a yellow-ish tint about 3/4" or thicker. Cut out a triangle with one curved side.
Drill random holes of various sizes all over the top and sides an 1/8" deep or so. Then glue the mice on the top of the cheese.
Rog
PS. Another cute idea is "hickory, dickory, Doc the mouse ran up the clock". I found a pattern of that one a long time ago but, I'm not sure where I found it. It may be one of Steve's patterns from a long time ago, check out his patterns.