Conveyor belts

Something like a clothesline to transfer resources between the carpenter and blacksmith buildings.
Core concept
Similar to a conveyor belt, the “clothesline” can be used to move things like ingots, tools, weapons, fuel, raw materials, and even coins between buildings. This cuts out the need for a courier to ferry things around. I think that this system would be most useful for RP servers, where each person has an assigned job(s), or in normal servers, which would make things much more efficient.

Personal twist (optional)
Lit dynamite could not be transferred on this line, to prevent griefing.