I have had these for quite some time, either bought during the late 70's or early 80's. I think they were most likely for sale during Halloween or for sale at all times in joke shops. Can't remember where I got them now, all I know is that I really like them and that they make a nice decoration for that spooky tomb. They are made of hard rubber/vinyl [Something like that] and have a peice of elastic for them to be hung up. The second photo of the 3 light colour ones are glow-in-the-dark. Not sure who made these, used to see alot of this sort of thing back in the 1970's/80's as well as rubber skeletons, bats, figures such as Witches, Devils etc [These are known as Jigglers in America and made by a company called Ben Cooper known for their range of Halloween costumes for kids].