content: I'm thinking some fish hooks added to that would be sublime. You put a metal leader on them and give them enough line to lurch back and set the hooks. Apply human shit to the hooks so that it'll run septic. When they hit the end of it, the line pulls a pin on whatever lovely surprise you've cooked up for them.  Of course you don't put this in your own yard unless you want to rot in prison. You place it in Minecraft someplace where there will be fish that bite on it.