Today's ds106 Daily Create:
"Moleskine, Notebook, or loose paper? Take a picture of your method of keeping track of ideas."
I have a box full of partially maintained notebooks. I rely on the one onside my skull. Inside there is a full scan of the piles of paper I keep next to my laptop (I do remake the lists once they are indecipherable).
Public domain NASA Brain MRI image from Wikimedia Commons