[rootsudo]

Would it be more fun to run a live cd webserver only? piece together an old computer, with an old live linux installation, and either run it unupdated or patched and carrying updates it can only apply w/o reboot?

[IntelMiner]

I (briefly) ran an IRC server on a Sega Dreamcast based on the same ideas

[_joel]

A Knoppix 4 CTF doesn't sound too challenging, tbf mate

edit: thinking about it, there's some good educational value, but maybe via vm than plopped on the interwebs :D

[bee_rider]

Do people do cyberpunk or sci-fi LARPs? An extravagantly unpatched server running on a raspberry pi or something like that would be a kind of fun prop.

[alasdair_]

They do! http://cyberpunk.jackalope-larp.com/ is run both in-person and online at the same time and apparently has a pretty high production value.