I am the faculty sponsor for the Dungeons & Dragons club at my school. Doesn't cost me much since I mostly just stay late and work one evening a week while the kids play D&D. I spent a few bucks buying some dice and a Player's Handbook since at the beginning few of the students had their own copies.
The other day, however, at the last meeting of the year, I was presented with this viking shield, made in woodshop by the student who originally organized the club (graduating this year), and signed by all the students who were there.
This will be mounted on the wall of the classroom once I figure out a safe way to do it.