Put a picture of the beach you visited in a shadow box frame and fill the bottom with sand from that beach. Much neater than a random jar of sand and shells! decorate the frame or put seashells or treasures found on the beach in the shadow box
Re-purposed Starbucks bottles with paint and vinyl labels. There is actually a lot you could do with these starbucks bottles. They look a little like vintage milk jugs so they are perfect for the kitchen.
Movie and Concert Memory Jar - cute idea. Something cute for me to start a collection jar since I'm always on the move, doing activities and seeing new stuff. I can put many stuffs into a jar of memories.