I love the penny tile back there. To make "custom" glass kitchen cabinet doors, just pry off the back wood part, have a piece of glass cut at the hardware store, attach with a heavy duty clear caulk. She used penny tile on the back of the cabinet.
The Ice Subway Tile is made from the strongest stain-resistant crystal clear glass. These tiles have a 8mm thickness that increases their durability and the depth of their color making them truly beautiful subway tiles. These subway tiles can be used for commercial or residential construction in either a wet or dry environment. These Subway tiles are sold by the square foot comprised of 8 mesh mounted tiles. The individual tiles measure 3x6.
Mariana 8-Light Cognac Glass Cluster Pendant in Antique Black Finish (8-Light, Cognac Glass, Pendant)