Lined via Eliis and BERG both, this is an idea I'm having trouble putting down. It may not actually be that useful for me, in as much as while I do use notebooks (I took delivery of my own back of lovely new Fieldnotes books myself the other day), my use tends to be sporadic, but the flipside of that is that if I could train myself to use them more, or at least better, I might find them more useful.