If you can’t shoot right-handed, or need to shoot left-handed for some reason (i.e. demonstrating something in a photo with your right hand), you can simply flip your camera over and use your pinky finger to press the shutter. Problem is, this ergonomically unfriendly grip is hard to do, and puts your camera at risk of slipping out of your hand. Instructables member bertus52x11, the same guy behind the PVC pipe camera support, has clever hack that solves this problem.
His solution is to attach a bent aluminum strip to the tripod mount that allows your thumb to grip the camera more firmly. So, if you break your arm like bertus52x11 did, this is a clever way to keep on shooting!