Help! What to do with my shells?

[cwalton]

When I was little, I was absolutely obsessed with shells and collected quite a few interesting ones.  The thing is that I, being little and wanting to do everything my own way, threw away hundreds of original collectors cards and rewrote most of them with my own with generic names from a book. I'd like to make my collection worthwhile without having wasted all that time, effort, and money for nothing. What should I do?