I have a pressure bleeder that I made years ago that works good for bleeding brakes on older systems. It's fairly simple, the picture below that I found on a Dodge forum is basically what I have. Its a metal plate with an air fitting and a piece of flat rubber for sealing. A C-clamp or 2 to hold it together and 10psi of clean air and away you go. Just make sure you don't run the master cylinder out of fluid.

Dodge Ram Charger Forum:
http://ramchargercentral.com/technical-discussion/home-built-brake-pressure-bleeder/




I've also seen pictures of ones people have made out of garden pump sprayers. They seem interesting in that you don't need an air compressor and they hold extra brake fluid so you don't have to worry as much about running the reservoirs dry.