We love this treasure of the sea in our house and have been collecting it for years. We have jars of the stuff all over the house. Not sure what we'll do with it but it's just fun to collect and the kids get excited when they find a rare blue bit!
Looks fabulous & who needs an excuse to collect anything:) maybe make a concrete slurry for a path and push the glass down gently do the colours are still obvious but the glass nice to walk on.