Here are some handy instructions how to turn your ex-pet mouse into your next furry PC peripheral!
“Obtain a small travel-size (hardware) mouse. This one is a wired mouse that is way to small to use comfortably every day, but perfect for going inside of a mouse. Obtain a similarly-sized (wetware) mouse. These are commonly available fresh or frozen from pet stores, or any other place that sells reptile food. It’s easier to fit a small object into a large mouse than a large object into a small mouse, so err on the side of caution. You can always fill extra space with cotton balls. If you’ve got an optical (hardware) mouse, make sure to choose a pale-furred (wetware) mouse for lightest skin pigment – this will be important later.”