I'm working on planning my exhibit for this year. To keep things not identical to last year I was thinking of showing Xenix on my Lisa. However I'm worried the exhibit won't be interesting enough to the general public (Oh look, it runs. Oh look, it's Unix. Oh look, there's a clunky menu interface you can bring up.)
How about setting up a Micnet network between all the Xenix machines that show up? I've been looking to try it and I have a 100' RS232 cable I've been looking for an excuse to use. Does Lisa Xenix have Micnet? I believe it showed up in System III. We have it in the last version of Tandy Xenix v3.2.
Of course games are always interesting... however as far as I know none were made.
We have a 7 disk set of Xenix games in the model2archive. I don't know if they are compatible with other Xenix. It has a pretty good Star Trek implementation. https://github.com/pski/model2archive/tree/master/Software/Xenix/Xenix_Games