Second vote for the G4-mini and 10" VGA tube (if you can find it). But if you're going to bother making it more modern, why go half way? Drop a brand new Mac mini in there, or better yet, just make it a monitor with a hollow bottom half, so you can always use it with the latest-greatest-littlest Mac.
Issues:
1) CCs are really getting to be on the rare side. If you have one with a good case, but a broken CRT, blown power supply, battery acid-eaten logic board, and a badger lived in it and ate all the wire insulation, then go ahead. Otherwise, you should probably try to restore a CC.
2) Mac OS X has some dialog boxes and preference windows that are larger than 640x480, so 800x600 or 1024x768 is really preferable if possible, then scale up your icons and system fonts. Think of it as a retina display
3) I think the Trinitron tubes had a unique curve to them, so even if you find a 10" CRT, if it ain't a Sony it may still not fit the bezel perfectly (and yet so much better than a literally flat-screen).
I'm a big proponent of "it's your property; do what you want," but fair warning: you're going to make some purists' heads explode and the flames will land all over your threads about a project like you're suggesting.
Issues:
1) CCs are really getting to be on the rare side. If you have one with a good case, but a broken CRT, blown power supply, battery acid-eaten logic board, and a badger lived in it and ate all the wire insulation, then go ahead. Otherwise, you should probably try to restore a CC.
2) Mac OS X has some dialog boxes and preference windows that are larger than 640x480, so 800x600 or 1024x768 is really preferable if possible, then scale up your icons and system fonts. Think of it as a retina display
3) I think the Trinitron tubes had a unique curve to them, so even if you find a 10" CRT, if it ain't a Sony it may still not fit the bezel perfectly (and yet so much better than a literally flat-screen).
I'm a big proponent of "it's your property; do what you want," but fair warning: you're going to make some purists' heads explode and the flames will land all over your threads about a project like you're suggesting.