So I was trying to think of ways to raise awareness of a group earlier, and then it hit me: We need posters that we can attach to stuff. Notes are great and all, but they aren't eye-catching (and to be honest, they kind of look like trash littered onto the ground and don't really scream "This is worth looking at"). A poster would be instantly visible to any passer-by. They could be attached to standing items in the game (buildings, signposts, trees, etc...), and could have custom designs placed on them using some sort of drawing tools (it wouldn't have to recreate Photoshop with layers, effects, and all; a simple multicolored pencil and eraser would probably do, along with possibly the ability to add text). I wouldn't be able to make much use of this functionality, but I know of people who could. The result would be an interesting style of decoration that could be seen across Ur.
Additional considerations I thought of while pondering this (only one right now, but I'll probably edit this multiple times before anyone reads it):
If posters attached permanently to a surface, this would quite quickly become a problem. Perhaps they stay attached for one real-life day. This, however, would lead to a new problem: someone spends a lot of time designing a poster, then it's gone. Each player could possibly have a "library" of poster designs they've created, that they could apply to a Paper either with a quill, or a new item, a Printer. Or something like that.
Which would then raise another problem: people could spam their design onto every item they see. (possible solution: limit posters attachable to stuff per IRL day to one)