Table top 3” depth for showcase (Route 3A Hudson New Hampshire)

My husband build one for me and I put my shells in it with sand on the bottoms- it’s good to showcase anything you’d like it to have, you just have to form a glass top for the cover, which is easy with any glass company. It’s a real treasure to own, but I don’t need two!
Take it and make it into something beautiful for yourself? 3” x 54” x 36”