Very awesome, it is reminding me of my sister who is a school teacher. Over the summer she was collecting shells on the St-Laurent shores for a project with her kids. I grew up on those shores and I have fond memories of those shells that were so common. Exotic fresh water species have since been brought along by boats. I am not sure I used the shells for arts and crafts myself.
Thank you for sharing these wonderful experiences in Utah, I particularly like the fossil next to the contemporary shell. It resonates like poetry about the concept of time.