My 88 year old buddy did a "rug" mount on green felt with an ermine (weasel) with mouth open and has it on his wall. Tells little kids its a baby polar bear and they're just awed! Been a few adults not too bright either!!
I would say if you have the space why not go all in and do a real once in a life time custom life size. Just be sure you get the right guy, mice are very difficult to get that exact right eye set and level. Use some one who specializes in mice, or at the very least rodents. Be sure you post photos when the mount and the habitat are done... ;-)
More of the story: I have wife, (scared of mice,), convinced they travel in packs and come under bedroom doors at night and perch on top of covers. When they are sure you are asleep, they lick you on the lips to get water.
#2 bit the dust. And Paul, you are right. Cats will suck the breath out of a baby. Besides, both my dog and I are allergic to cats. Only had one snake and it was in the terlet. So, I just hooked the tractor up and moved the terlet.
Buffalo, what is that, some kind of king snake? bowriter, had a gal friend stay over at my place in WA once. (note, 'once'). In the middle of the night a mouse ran across the covers and stopped on her face, then continued on when she freaked. She never stayed there again. LOL! Hell, it didn't even lick her lips!
Had to dissect several in college but much larger. Also dissected an earthworm and about a dozen animals from goats to elk. Got to where I kinda liked necrposy. Usually do a deer or two every year just out of curiosity. But I aint doing anymore mouses or woims.