Dell Wasabi PZ310 Ultramobile Photo Printer for $28.00 shipped.  Here is a screenshot for your reference.  Note that you can select either Blue or Pink during customization.  If asked during checkout, simply use your name as the business name.  It measures 4.8"W x 2.9"L x 0.9"D and weighs 8 ounce. It prints on 2" x 3" paper and can connect via PictBridge, USB 2.0, and Bluetooth.  As a comparison, Sam's Club sells it for about $96.