I was just about to post a question asking for suggestions for something I could use like this for my world, and of course I find this question from a week ago lol.
I might post it anyway just to revive the conversation in other, similar communities. It’s a useful MacGuffin.
Black olive birthday (lemmy.world)
What is a sought-after resource that everyone covets because of the riches it promises?
In real life, that’s oil. In Dune, it’s spice. What is it in your world?