  You need to make a rubber mat mirror. Parents know to put their infants down on their tummies now as often as possible during the awake hours. The black and white play mat makes a nice thing for the babies to look at while down there, but a mirror reflection would be great for variety. I always propped up a clunky bathroom mirror on the floor for that kissy face stage, but with it's heaviness and sharp edges, guests always gasped. A rubber mat could be hung on the door later for baby's sit up stage. 
