[As appropriately requested, a thought from a thread in General which is more appropriately an Idea:]
Add 'Construction Offices', small buildings somewhat like the Bureacratic Halls or Machine Rooms, on various streets across Ur. Inside, street maps show the present state of the land, including the future sites 'under construction'. An NPC foreman (possibly a street spirit, but maybe an appropriate animal... you know they could have fun with a Glitchy Beaver) accepts donations toward the new construction. HOWEVER, the limit on donation isn't a finite quantity, it's a limited amount of time: the time until the new street is finished/released (for example, maybe one or two game days). Everyone who donates the appropriate items during that time gets a reward, and after a certain threshold is reached, you get a trophy piece for your total contributions.
So unlike the previous street projects, you don't have to go to one specific location, deal with lag from the swarms of competitors, try to beat the rush to click on the 'donate' button, or hope to have the right stack of items in your bag at that moment. Yet, you still get to trade hoarded goods for something unique, plus it fits the theme of 'build it bigger'!