Free: Contests & Raffles.
That really sucks, I had one stolen last year. My evil side thought that I could take my old cams that no longer work, remove the guts and install a can of bear spray that would go off when some jerk opened it. But that is probably illegal. It would be fun to do with a cam hidden so you get it on video
Find a bear box that locks so people can't do that to your camera. Seems like that crap happens every where.
I think I'd be rubbing some of the hottest peppers I could find on that SD card.
People are curious by nature. Look at it this way, ya still gots da camera.