DIY web site Instructables details how to make an image stabilising unit to supplement your steady hand using a tennis ball and a few nuts and bolts.
The device connects to the bottom of your camera to provide a counterweight that can help you snap your photographs shake-free, and it's a decidedly cheaper alternative to image stabilisation lenses:
Its task is to act as an adequate stabilisation unit, for a Compact point-and-shoot or a DSLR camera. The principal is based on a floating buoy. The mass of the camera is equalised by the counter-weight, which is self locating. Therefore deadening fluctuations of movement.
If you have a tough time keeping your shots steady, breathing like a sniper hasn't helped enough, and you're paying for it with shaky, blurred photographs, this DIY stabilisation tool is worth a try.
iSteadii 2.0 - Image Stabilizing Unit [Instructables]