here's a nifty trick to do with the beige G3 it has an internal SCSI bus which was used for the internal Zip drive on the models that shipped with one. If you don't have one, or if you have an external and can pull the Zip out, you can get a cheap 1 or 2 GB SCSI drive for a few bucks and hook up a separate swap partition for OS X. It really helps out on computers with slower bus speeds and G3 processors. Plus its a great way to fill up that lonely drive bay.
best part about the beige G3 is its ability to be upgraded to a dual G4. I'm slowly building mine into the main console of an A/V system as the controller, media server, etc.