I was a bit bored and decided to kind of make a master list of town build ideas I've had. This list is so I can reference back to it when I want another thing to work on. Feel free to add to it!
Farm
Mob Farms
Mall
Library
Bee Farm
Zoo
Pvp Arena
Shooting Range
Restaurant (maybe with food shops inside)
Jail
Head Museum
Casino
Event Stadium (Your town could host events for giveaways like spawners, ce's, gear, etc.)
Town Garden
Furniture shop (where players can display furniture they have no need for anymore)
Chapel or church
Town mine entrance
Town nether entrance
Post office (players could leave mail for each other with writable books)
City hall
Art Museum
Hotel (New players can stay and see if they like it or other town members can if they'd want to switch)
Marketplace
Community Storage
Of course, some of these are actually useful and the others are just for fun/empty spaces
Farm
Mob Farms
Mall
Library
Bee Farm
Zoo
Pvp Arena
Shooting Range
Restaurant (maybe with food shops inside)
Jail
Head Museum
Casino
Event Stadium (Your town could host events for giveaways like spawners, ce's, gear, etc.)
Town Garden
Furniture shop (where players can display furniture they have no need for anymore)
Chapel or church
Town mine entrance
Town nether entrance
Post office (players could leave mail for each other with writable books)
City hall
Art Museum
Hotel (New players can stay and see if they like it or other town members can if they'd want to switch)
Marketplace
Community Storage
Of course, some of these are actually useful and the others are just for fun/empty spaces