How to make a rat, coon, bear trap (just up-size: use a vat for the bear and a rotating 55 gallon drum for the bait):
http://www.youtube.com/watch?v=gBVq6NnKPwI
I can't take credit for this as Mrs. Mattson actually had the energy to do the project.
Upcoming film on how to get an angry bear out of a vat (whenever somebody does it).