find old plastic xmas trees, can drill lil hole in the stand its self, or zip tie...actually, one i dug out of the ground, it had been layin there a year, came out perfectly rusted and looks some what the natural colors from around the area, of course its straight though.
basically you want to brak the pattern so that it doesnt look like a straight pole..so maybe some fake ivy from the craft store, ask the wife...
camo spray paint works great too.