even though i live in a state with an ocean, i don't get to the short that often. PLUS we don't have a heck of a lot of sea glass in connecticut (that i've seen at any rate)
here's an idea (from boing boing but really from Rich Faulhaber at Evil Mad Scientist Laboratories).............now all i need is a cement mixer (put-i put-i)!
How to make sea glass
the beach glass machine