I just bought a Cubby drawer off of ebay and it works fantastic. I had previously bought the EVannex cubby drawer, but was really disappointed at the quality. This one is less expensive and way better quality. I have it in my Model S, But my wife has it in her Model X.
Tesla Model S Drawer Accessory- ($25 rebate offer!) Cubby Drawer | eBay
Tesla Model S Drawer Accessory- ($25 rebate offer!) Cubby Drawer | eBay