Thanks Jon, No I haven't, It just came to me as a different type of design for an interior walkway. I was thinking of how to get the groceries from the front door too the kitchen without tracking mud and wet on my carpet. I thought why not make it beautiful at the same time rather than just cutting the carpet and laying wood flooring. It will have either a epoxy, or a resin top to make it waterproof, with a very slight dip in the center. Sand and river stones in side a wooden box that has a beveled edge on the outsideto match the existing floor level. I also thought of making small copper fish to place in the resin or epoxy.