About to play Harvest Moon: Animal Parade. This game has me itching for a farming game, and I've never played that particular Harvest Moon.
In any game that I run out of things I can think of to do, which is rare for myself, I usually just put the game down for a while and go onto something else. At least till I come up with something. I generally rotate between a few games depending on my mood.
Eh Stalk that games fourms or start doing odd things like ,... Living my life through my character and put in my own tid bits of commentary...Don't ask...its best not to question one's insanity.
The most boring piece of advice - Take a break. Nothing worse than burning out on a game because you're trying to play more when you're reaching a boredom peak. Just put it down for a day or two and do some other things, play some different games or watch a movie or do some work. Come back to Stardew when you've got the craving for farming again. Burning out es no bueno.
Since I'm running sort of low on stuff to do now (almost to Winter of Year 3), I've been debating starting a "complete jerkhole" save, wherein I pick the bottom response in every conversation choice and side with Joja instead of rebuilding the Community Center...