Depends on what you want to do. I have seen posts in the Touring forum of fairly intricate rigs people put together that allows them to film and photo tours with a semi-permanently mounted camera (like this http://www.camerahacker.com/build/Bi...ra_Mount.shtml). Or there are mini tripods and things like this (http://www.clamperpod.com/Cpod2.html).

A little more detail might help to get some better responses