A new iPad app lets users create digital collages from a variety of sources including personal photo collections, Facebook photos, Bing search images and more. Called Mixel (free, App Store), it's also unique among similar apps as it shares all creations with the Mixel community to tear apart and do with what they will. Created by Dogpatch Labs, the app is meant for creative types who don't need to be sitting at a dedicated desk or studio to indulge in their passion, said founder Khoi Vinh.