Any FEASIBLE ideas for wreaking some vengeance?

This coworker of mine is sleeping with our married boss. When I found out she was stealing my prescription medicine out of my purse she used her and my boss' affair to get ME fired. Any awesome ideas for revenge that I can actually execute without getting arrested? I would just tell his wife about it, but since I was just fired I wouldn't sound very credible. I don't have the money or time to try and do the court thing either, so I don't think I really have any other legal options.