Have a few dead computer mouses laying around? They’re probably sitting in the same spot you keep the skeletons in your closet. You might be having some trouble parting with them. And that’s fine, totally normal. People become attached to inanimate objects all the time.
So, if you want to actually do something USEFUL with those dead mice, you might as well sit down at your work bench for a few minutes, wipe down the foot of dust on its surface from its lack of use, and strip down the mouse so you can use it as a nifty toothbrush / razor holder. Why the hell not, right?