Capture the essence of your summer camping or hiking trips in not the photos you take but the frames in which you display your photos. This easy twig photo frame project can be made with materials you gather on your vacation. Alternatively, glue stones or seashells onto a ready-made frame if your vacationing takes you to the beach. Or, decoupage pressed flowers and leaves onto a frame.
Love using natural materials found in nature? Check out these books on Crafting with nature. 
I did this picture frame once and it was really cool. Good one.
Great Frame idea!