So, what now? What do I do with all these shells? I will say I don't have an abundance of ideas for them, I probably can find a use for about --10? Anyway, I have come up with three ideas that may help out someone.
First and the easiest, is to find some empty jars and fill them with those "lovely" shell
s for a great knickknack for the special someone's room. If it's for someone special you can find some lovely jars, or even old vases at some thrift shops. Now if it is for your little ones room, maybe you could wash out that mayo jar, or pickle jar-good luck with the smell. Anyway, it is easy for them to do and it makes a neat decoration.
First and the easiest, is to find some empty jars and fill them with those "lovely" shell

One problem I have with the above idea is that my wonderful son insists that each and every shell be seen in full view. Right now his bookshelf has shelves filled with pieces of shells so that he can look at them.
Another idea is to make some beach scenes with these shells. For this project you will need--glue, sand, cardboard, tacky, shells. I used a piece of cardboard from the side of a cereal box for this project because using the sand and shells on paper just doesn't hold up well. The cereal box was a bit flimsy. First, have the child paint the piece of

You could also spice up the above project by painting some sea water. First, pain
t on the glue and add the sand. Then use some tempra paint to add water. You don't want to paint first and then add sand because the sand will stick to the paint too. You could paint first and let the paint dry, but just remember sand will stick to wet paint.

The last project would be a use for all those pieces of shells you have. It would be a mosaic. You can draw a shape, do freestyle, or just do decorative areas, but just put some heavy glue down on some cardboard and allow the child to fill in the area with the pieces, making a mosaic. My daughter helped me make this project. She said it is the sun over the sea and sunset with a sandcastle. I think she did a pretty good job--she's not a preschooler though.

Some of you may be much more creative and be able to make some shell animals, or other creations--good luck. I hope you have a good time finding some uses for those shells.
UPDATE: I've gotten some great comments, thanks so much. Take a look for other ideas. Thanks.