Wooden Magnets with Woodland Silhouettes. Something like this could be nice geoswag. If you have some limbs and a chop saw making the wood slices wouldnt be hard, and you can get craft magnets at the Dollar Store.
I honestly thought these were earings first. But it is a cool idea: A homey take on the traditional locket, bottle caps inset with small black-and-white pictures, above, can be used as thumbtacks or magnets. Magnet and Thumbtack How-To