I got an opportunity recently to play around with some old iMac DVs (late 1999 or early 2000 by the looks of things) that had been lying around unused for a while at college.
So now, instead of lying around with no system software loaded on them, they are being put to use. Two are running OS X 10.1 and the other one that is up and running is running OS 8.6.
It’s always good to play with older stuff, and it’s nice now that they can be put to use (which I imagine will involve reinstalling Mac OS lots of times as part of the Operating Systems unit).