Could be anything as long as it has an actual purpose. So no projects that are merely aesthetically or creatively pleasing, but something that has an actual role.
Some sort of villager trading hall, if you can even figure out how to do so with their new job/home conditions.
Watch out for the crabocalypse. Some say the day will never come. But it will.
Feel free to drop by for a chat whenever.
If you'd like to talk with me about other games, here are a few I play.
Team Fortress 2
Borderlands series (Borderlands 2 is my favorite game, ever. TPS combat is a lot of fun and makes up for the lower-quality story, in my opinion)
Elder Scrolls series
Warframe (IGN is something like That_One_Flesh_Atronach)
Pokémon series (HGSS forever)
Left 4 Dead 2 (Boomer files always corrupt though)
SUPERHOT (SUPERHOT is the most innovative shooter I've played in years!)
Dead Rising series (Dead Rising 2 is one of my favorite games, and the 3rd was a lot of fun. 1st has poor survivor AI and the 4th is bad)
7 Days to Die
Just Cause series
Come to think of it, I mainly play fighting-based games.
I'm in the process of collecting all of the hostile mobs in the game and designing a museum type building for them. So far i've collected a shulker from the end and some of the overworld mobs.
what about building mob/tree/crop farms etc?
very large scale ones who take days to build
or maybe just create a "wonder base" which is entirely self sufficient and automated and you wouldnt need to leave the base at all for whatever reason?