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.
From HA: Travel Memories Map. Draw a map on a cork notice board. Resize Alaska and Hawaii to fit. Print a photo for each state and cut to shape with a craft knife. Attach to board with pins or sticky dots.