TSR What TSR-era D&D material do you still put to use in your 5E games?

[the Jester]

The Rod of Seven Parts is such a classic macguffin hunt that I've started to frame several (sadly short-lived) campaigns around it. I tend to utilize it more conceptually (the rod itself, the battle between Order & Chaos) than actually mining the written material itself, though.

I just used the Rod's "now you're super lawful" effect in my game, turning a major ally into a reluctant foe by order of his rightful liege and his dedication to the rules.