Everyone who works at LBD loves using our trusty 1.25" button machine, so I'm always trying to come up with new ideas. Recently, we've started making these Seattle neighborhood magnets.
I have them displayed on a pretty tin tray that I found at Goodwill for a couple of bucks. You can find interesting tin objects aplenty at thrift shops and they are usually quite cheap. These trays would look fantastic mounted on a wall in a group to be used as a quirky bulletin board.
I find it handy to keep a little magnet with me when I'm thrifting so that I can tell if something metal has steel content. (Magnets only stick to ferrous metals, so you're out of luck with aluminum.)
Ballard magnets $2 at our store.