Most of these are shells I collected in middle and high school during my twice-yearly trips to south Florida to visit my Mom Mom. Some were picked up at a cheesy beach shop...you know, to add some sparkle to the collection. Shells are fascinating for kids to explore. They're fun to hold and handle (lots of different textures to explore). They're great to sort and compare. It's interesting to imagine where they came from and wonder "Who used to live in there?"