Robens Bushcraft DIY Tripod is great for trekking and basecamp use.  Small and compact this system lets you create tripod legs from suitable sticks that can be found when you are outdoors camping in the wild.  The cooking height can be easily adjusted by altering the lengtht of the chain.
 
WARNING: Please ensure all factors of chosen poles, including strength and diameter, are suitable for intended use to avoid collapsing.