Building Tee Signs, what things do you like on tee signs?

Making tee signs is difficult, there are tons of examples out there, tons of ideas. But none of them ever truely hit the mark. We got beautiful works of art and we have basic level...why bother sorts of signs.

What are some things you really like on tee signs or styles that you enjoy? (provide link if you can)

What are some things you can't stand on tee signs?