UnfoldPrints - UnfoldPrints is an app that allows you to make photo collages and order them to print.
Sprocket Printers - Create instantly stickable photos in seconds
Lalalab - Print photos from your iPhone
Printage - Print your photos on gorgeous tiles
Nations Photo Lab - Nations Photo Lab is an app that provides the highest quality of photo prints and gifts.
Impossible I-1 Instant Camera - Take real polaroid photos with your iPhone