I'm cheap and lazy, but I do own an air compressor with a regulator I can dial down to 10 PSI. So the pressure bleeder I made consists of a master cylinder cap with a pneumatic quick-disconnect fitting mounted in it. I fill the MC reservoir way up, open the bleeder, install the cap with fitting and attach the compressor hose.

I have to refill the reservoir a couple times on each rear wheel, but with the pressure at 10-12 PSI it's not hard to monitor. To relieve pressure I detatch the hose.

The one caveat is that compressors tend to accumulate moisture. I try to do my bleeding on a dry day and generally keep the tank drain open when the compressor is not in use.