There's a bunch of different fig rig type stabilizers and DSLR cages on the market. Most of them a bit expensive for my taste. I ran across a sexy little Galvanized rail at Home Depot and she begged me to take her home.
After about an hour cutting up the rail, and adding some bike handlebar grips, it's my latest DIY creation for under $30.00 dollars. I have full information about this DIY and many more at cheesycam.com/?p=966