There is the iPhone photo appOne Momento, an art project that allows you to take only one picture. This picture is uploaded to a gallery with all one-image-photo-app-images, aiming on 250,000 images, in a way a collage of images from 250,000 photographers.
That one image idea is quite interesting and can inspire more art applications. How about taking one image today, saving it in a separate folder on your computer or cloud and making a note in your calendar to open this image on a certain day in the future? What will the image tell you? It is like writing a letter to yourself, posting it and receiving the letter on a certain date in the future and it most likely will give you exactly what you need at that very moment, some encouragement, consolation, joy, congratulations or support.
Wanna try? Take a photo or choose one from your image gallery, seal it in a folder on your computer, pick a date in your calendar and make an appointment/note with notification. Then let go and forget about it. It will make itself know when its time to open it again.