Videomaker – Learn video production and editing, camera reviews › Forums › Technique › Miscellaneous Techniques › Great DIY website
I ran into a very interesting DIY web site called instructables.com.
Basically, people upload step by step instructions on how to create a very wide range of things. Some of the projects are quite mundane, while others are very sophisticated.
There is a tutorial there on making a fig rig using only PVC piping, several on making camera dollys, jibs and cranes, and several on making specialized tripods.