Its not only for solo bushwalkers. if you're in a group, you can take a photo and actually be in the photo aswell.
Its one of those simple ideas that makes you wonder why no body ever invented one sooner. you can contact their Australian distributor
It is basically a plastic ring that slips onto the end of your walking pole, with a screw for your camera. I tried to steal the idea and make my own, but the camera kept pointing in weired directions and wasnt very stable so at $16+12 postage from Ballina NSW, i bought one instead. Jeff from AMTC is the Australian distributor for these little sticpics and their website is: http://amtcgear.com.au/Products_Detail.php?ProductID=64
It comes in several different sizes depending on what brand of walking stick you use. Mine are Leki and thats a size 2. Just email jeff and he'll sort you out.
It weighs 11 grams. you can always take a small mini tripod, but this is just quicker and you can show off pics of yourself with nice mountains in the background.
Just be careful that you actually have to ram it in a little because first time i put it on, my camera fell off!

I know they're abit dear for a piece of plastic, but i think they'll make a really good cheap present for some bushwalker you know.
heres a video review http://www.youtube.com/watch?v=y0lIyexiX2g