Heretic of The Seventh Circle
I start working on what the players want. My players always have a hundred PC concepts each at any given time, so that is fairly easy.Let's say you likely have another D&D campaign starting "down the road"- it might be several weeks or months, but it is definitely coming as your current game winds down.
You don't know what the players will want to play, except that it's probably going to be D&D.
What would you do with this sabbatical time? Would you make small 5 room dungeons in preparation? Design campaign worlds? Random encounter tables? Maybe you would take time off from thinking about the game altogether and recharge?
And I am always talking about campaign ideas, so I can just kinda go “hey y’all wanna do Space Fantasy, Islands World, another Eberron game, or take a break from both D&D and Long campaigns and do a short The One Ring, maybe Blades In The Dark, something else?”
But campaign prep is basically my main hobby. I do it in some amount any time I have free time.