What can I add to my minecraft factions base?

I have basically everything you could think of: a lounge, a huge tree farm, huge crops farm, cactus farm, furnace room, lava storage, xp grinder, bedrooms for all members, vaults for everyone, a kitchen, an animal farm, a storage room literally everything i can think of. However, is there ANYTHING else that could be added (it doesn't even need to be productive, just something i can do) because it has gotten a bit boring to play and i want a new HUGE project.