I once was on a bush flight that had a really low weight limit for baggage. I ended up putting all my camera equipiment in my cargo pants pockets. Also, was wearing a couple of shirts and sweatshirts under my jacket. Of course, the flight was delayed 1/2 hour, so I sweated in the desert, and they didn't weigh the bags at all....
That said, you don't want to wear the pants noted above through an airport. The magnets will set off the metal detectors/security alarms.
Matt