We used to make cap bombs out of them, when we were kids. We'd take a roll of caps, and roll it out. Bend them in the middle, the whole way down the length of the roll. Then we'd get one of those ceramic fuses, that were out years ago, and take off the end caps, and empty them out. Fold up the roll of caps a squeeze them into middle of fuse,as tight as you can get them. Stick a match down middle, light it, and run