I put Concerned Ape on my first file (a cool easter egg, you should try it in your next save file) and Stardew Valley on my second (another cool easter egg).
I put "the forest" for my main save, but now I've started to put "Iced Tea" as my favorite thing, because I do love me some iced tea. The first thing I ever put down was "family" and boy did I have a scare when I ate my first stardrop...
I put down "exploring." At the time I wasn't all that familiar with the game, because I think "creating" would have ended up being closer to the truth.