Sharpie to Go
I lived in New York for a while, so I have a couple assumptions. You're carrying paper shopping bags -- maybe one bag with both hands?
How about a large Sharpie pen that you attach to the side of the bag. Idea being that you jot down a couple words of your ideas on the bag. It would require temporarily bearing the weight of the bag in one arm, but you'd be doing that anyway with an electronic device. The portable sharpie is just a quick device.
Originally Posted by Chas29
Director of IT
David Allen Company