Sometimes the looks of something makes just as much as difference as its function. I am not 100% positive that this steam punk rig by youtube user StrugglingWriter76 is the most comfortable thing in the world, but I would admit that it looks pretty cool.
The rig is based around plumbing supplies, 15mm copper pipes, split rings and foam. All could be bought in the plumbing section at homedepot or such.
There are three components to the rig: A shoulder pad, a mounting section and a handles set.
Here is the three parts video that show how to build one of these beauties. Sadly, there is no test footage of using the rig, or of reaction shots from people seeing it.
P.S. If you are not into plumbing you can make an awesome rig from a $7 IKEA cutting board.