Economic buildings ideas?

Do you have ideas about some new economic buildings?

Chicken Farm House. Costs 100 wood, and you can only make one. So, you can’t just spam Chicken Farm Houses, unless you make a scenario where they spawn or something. It is possible to limit buildings I seen it done in mods. You can remake the building if it’s destroyed.

This building slowly creates Chicken, every 60 seconds a Chicken will spawn from the building. Each Chicken holds 100 food in total. The Chicken decays very slowly, so you are guaranteed 100 food per chicken harvested by villagers. The Chicken cannot garrison in Mills, so you can’t spam Mills as Gurjaras and garrison chickens in them. In terms of behavior the chicken behaves like a gaia deer, you can’t control them. This building saves you wood long-term and is essentially a free farm.

When 5 Chickens have been spawned it will not spawn more chickens unless you kill one of the chickens.

Banks slowly generates gold at a steady rate.

Drop sites for fish that can be built by fishing ships.

Sea caravansarai to increase trade ship movement.

Swgb power core type building increase the working rate of buildings within its aura.

Trade guilds can produce food/wood/gold/stone by garrisoned villagers/merchants.

The banks idea is interesting. You can build it in your base, and in another civilisation (allied player bases) across the map and they generate money for both allies (cuts if you become enemies). The other team has to stop you by destroying the bank only.
Civs who could get it : Italians, Burgundians, Dravidians, Saracens and maybe Byzantines.