Minecraft Survival base ideas?

Recently got back into Minecraft and me and a few pals have a survival world with a base with large external walls and houses within the walls. We currently have the following:

• Mine
• Community house with chests
• Wall turrets and defense points
• Enchanting Room
• Nether portal room
• Horse stables
• Food farm and chicken farm
• Netherwart farm
• River through the base for boat access
• Piston Doors on the city walls

Is there anything else that we could build in the compound to keep the fun of this server alive while we gear up for doing the world bosses or village raids or exploring? I love developing based but I’m almost out of ideas for now…