From Paul Purcell at About.com

• Record parking spot locations.
• Engine repairs. Send a pic to a mechanic who may talk you through a quick fix.
• Business or service function and hours. Copy posted business hours or listed service functions (and pricing) for later review and recall. You can also report price gouging.
• Child custodian. If you can't get to your kids at school or other function, relay a picture of the person who is coming to pick them up.
• Info on injured or hospitalized people.
• Hotel room number and location.
• ID your evac gear. Take a picture to prove ownership.
• Photo scavenger hunt. Give kids a short list of things they should take a picture of.
• Identify the close-up. Take a really close up picture of something while the kids aren't looking....

...via Smart Mobs