Do you ever, every once in awhile, get a touch of GM's block where you have no idea where to go or what to do? (Obviously only applies if you're a GM.) Really? Me, too! I've found it helpful to either let the players mess around and do their thing (players are great at finding trouble) or I sometimes grab one concept and let it guide me for the session. It might be a thunderstorm or an angry ex-girlfriend or a robbery or a particular monster I've randomly drawn from the Monster Manual (especially that last option).
What do you do?
(Apologies for the short post - had a co-worker's funeral on today)