Adventures in Planes and Time!
I had the opportunity of running a game for two of my players last week. Since their characters are from different campaigns and worlds, I went for a planar and time-traveling adventure. Here is a front/module/thing I wrote after the fact, in case some of you fancy a Dungeon World and Doctor Who crossover.
Edit: I should really thank Michaël Croitoriu and Sebastien Delfino for agreeing to this silly idea, and David Girardey for joining in at the end to play his Wizard-from-a-year-ago.