In the interest of experimenting with found-art reliquary construction, I thought I'd buy some mouse skulls. To my shock, I couldn't find any for sale, and eventually bought a muskrat skull on ebay*.I eventually discovered Skulls Unlimited from a previous askMe , but they charge fifteen bucks plus shipping.I guess I assumed that, since they are considered vermin and are regularly exterminated,in this crazy world would be selling mouse skull five for a dollar. Preferably someone like Sarina Brewer , who uses and sells donated carcasses and roadkill only.So, in short, anyone have any suggestions for cheap, ethical memento mori?*Upon payment, I noticed that they also sold skins and traps, making me feel a bit as though I'd commissioned this animal's death. Boo.