These are the little notebooks I've using during last years. Most of them are a kind of "sidecar" notebooks with temporary notes and others are related to some specific projects as Donau's Journey notes. So many memories and ideas lost here! Only a few ideas pass the filter to be developed. I guess that's good since it means ideas flow well and the "better" ones have been selected.
I found tiny Muji notebooks the most confortable and stylish solution for this task. I never thought of them as a collection or even something valuable but when I see them all together in a box I feel I need to take care of my little babies.