clipped from: www.xs4all.nl 
The string will of course not totally replace a
real tripod. But it can give you just that extra stop. This is the luxury
model. - Thanks John for modifying the 1/4 bolt. The basic model is a
simple piece of string with just a loop at each end. Put one loop around
your camera and put your foot in the other. If you pull it tight, you
win up to three stops.
Cheaper than IS and so low-tech that it exists almost as long as photography
itself.
Now I think of it: did anyone ever try to shoot a gun with this as a stabilizer?
The one on the right is the one I always have in my bag. Even with a 300mm
it can give me 2 stops extra.That may just save my day.
Dutch star photojournalist Theo van Houts once used a contraption
like this to capture a candid shot of the Nobel Prize ceremony in Stockholm.
(He did not invent it, as the article in Dutch suggests.)
