I looked for a while for a set of bar risers that would look good on an old Airhead with no luck. Then I remembered that a while back I got a used triple top plate that came with a set of crusty bar clamps and I had an idea...
Pretty happy with the result and my back is thankful on long trips.
As you can see form the pics, I have no fancy tools (not even a vise!) this was done on the kitchen table of my apt. with a hacksaw and some sandpaper. Old cables worked just fine.