If you are looking for a lightweight monopod the Photojojo Store is offering the Twig Pod monopod. It is not only light in weight but also quite affordable. It is basically a 25-inch metal stick that weighs less than half a pound.
It can also collapse to just 8-inches and the end is pointed so you can just stick it in the ground. The ball-head mount ensures that you have the angles you want to shoot. Just $28.