PopCrunch reminds us that prison is a scaryplace. Hundreds of potentially violent people locked into a limited space, all of whom really, really don’t want to be there. With such high pressure stakes, things easily take a turn for the violent, and in an environment with almost no weapons, any tool to hurt other people is a major advantage. These 15 hand-made prison weapons were all crudely constructed from prison materials, but all could do some serious damage.