I love my iPhone for countless reasons, among them the numerous useful and fun food apps, which can be a big save in the kitchen. Another feature that comes in handy is the phone's camera; AlexisSF once told me she takes photos of a recipe's ingredients with her camera phone, so she can refer to them in a pinch instead of a shopping list. I've been doing the same ever since.
If I'm going to store to pick up ingredients expressly for one recipe, I'll simply take a photo and head out the door, rather than sitting down and compiling a list. I've also been known to use the camera function when I want to jot down a recipe from a book that's not mine, or when I'm trying a bottle of wine and want to remember the vineyard and vintage. Do you ever rely on your phone's camera to help you in the kitchen?