Not sure if the stuff I do on a daily basis is "fun" or really just habit... each day I usually do my Daily EX Roulette for an alex, mine the usual money-making items, get some desynthing in on my goldsmith (still trying to get it to 100), dump everything for sale on the MB, and then run a ST to gear my alt jobs (if I haven't already gotten my item for the week).

The only actual fun I have is the night I do Second Coil raids with my fc mates. It's fun talking with them on TS for the evening and potentially getting some nice loot. But that only takes an evening, so the rest of the week is purely the above errands. I'm sure 2.4 will freshen up the fun for me, but at the moment I'm just sort of on autopilot.