Shadow boxes are a quick and easy way to add storage and decorative features to your walls. Great substitutes for small shelves, you can add a frame to the shadowboxes that make it look like a true piece of art! DIY instructions here: http://www.ehow.com/how_4910331_make-shadow-box-frames.html?utm_source=pinterest.com&utm_medium=referral&utm_content=inline&utm_campaign=fanpage
What to do with your seashells and sand you save from vacations: Buy a shadow box frame and pick a picture from vacation that you took next to the ocean. Place the sand from that beach in the shadow box, add your seashells, sand dollars, starfish, etc. and you have a cheap and easy vacation keepsake!