Exhibit A: Flickr app for iPhone. Thousands of quilt pictures whenever I want!
Exhibit B: camera phone. Taking pictures of works in progress allows me to remember where I was months later when I pick them back up. Also helps me keep things straight as I sew, without continually having to lay things back out. Less up and down from the machine.
Exhibit C: Sketchbook Express iPhone app. Allows me to sketch ideas as I have them. Whenever they strike!