My grandson had a special guided after hours tour of a bone museum

After looking at all the animal skeletons including a whale and a giraffe. The Curator took him and his dad in the back room and opened a shipping box. Inside were more than 20 human heads. He took one out and removed it's wrapping. It was some guys head and he said the curator just rolled it on the table, skinned it then dropped it into a tank of DERMESTID beetles to eat off the remaining flesh. Seems people donate their bodies to science and the head arrives with an ear tag with all the personal data on it. He said the guy looked like he had just shaved and that he had died of a heart attack a  day or so before. 

http://www.skulltaxidermy.com/kits.html