When I was a seinor in high school we had to make a video and had to have blood packs. The best blood packs are made from condoms. We had the following on the checkout counter: 1 Box of Trojan Magnum condoms, 2 Bottles of Corn oil, 4 Bottles of red food color, 2 Super 8 video cassettes and 1 Roll of duct tape. I have never before gotten weirder looks.