I just put together a new Megalodon tooth mini display case...   The tooth is 5.3 inches from Carolina.   I put smaller damaged teeth around the bottom.   I got the shadow box from Hobby Lobby.  It is an unusual shadowbox because it has glass all around the sides.     I got the image background from the American Museum of Natural History.   I plan to make at least one other similar display case for other fossils, with different picture background