After a few years of using the cordless drill method, I decided to bite the bullet and pick up one of the ~170RPM surplus motors as many others here have done, and electrify the Barley Crusher!
A buddy of mine has a fabrication shop, so he "threw together" (I think it looks great) a stand for me out of scrap aluminum channel. I then wired up the motor today running in clockwise rotation, and we're good to crush!
I opted to just switch the outlet it plugs into rather than integrate a switch onto the unit. When it's got power, it's running. I decided a switchable reverse was simply not needed with the torque this motor can produce.
So there it is! This is the first electric step to what will be a Kal clone electric brewery in my basement. I'll start a separate thread for that, as it will be quite the build. Right now I brew in my detached garage on a gas system, but it will be a joy to have year-round heated space with running water to work in instead.