Provide a medium that is waterproof and sustainable to hold reading materials for people waiting for public transit. Put books, newspapers, coloring books, etc. inside it and make using public transit that more interesting for the community.
Even if it's not just used by public transit users, but by regular members of that community it helps utilize an ugly pole, be it a telephone pole, light pole, or just a pole to hold the bus sign to. It also brings art and sharing to a community with very little effort.