One of the things that I’ve rarely used in a game is a stereotypical Wizard’s Tower.
I think I’ll have to add one to a game I run in the near future – a small dungeon that goes upwards (as well as probably downwards), with some minor encounters on each level.
It would be very easy to throw it into a Planescape game – maybe a Moving Castle in the Outlands, or an interesting take on a dungeon somewhere. Or even for some weird goings-on in Sigil.
Given I’m looking at some Spelljammer content soon as well, it would also fit pretty well there – maybe using the loot reward suggestion from the Spelljammer boxset of a vessel in a chamber that can be launched as soon as a magic-user is attuned.
Thinking about it, I don’t think I’ve ever played a game that went near a Wizard’s tower either. Are they just not used anymore maybe?