Like so many authors I love paper, pens, and all sorts of office supplies. As evidenced by the variety of those items spread across the desk top at this moment. And no, I won't show you a picture!
But one of my favorites is the Composition Book.
Don't worry, I don't waste paper! When I reach the end of the book, I turn it upside down and keep going on the now fresh right side pages. When I run into those notes made during earlier writing I skip that page, or if it's a small note, draw a circle and then I write around it. I hear you wondering what I do if I need to write out that grocery list or idea now... I'll enclose it in a doodled line and write around it.
Doodles. I'll do a lot of those too, while I'm paused in putting down words. Doodles are a great way to stimulate your mind and focus your thoughts. In school I listened better when I doodled. My 'talent' got so good while in paralegal school fellow students would give me suggestions then check to see how I used their ideas in my doodles. Did it help? I finished school with a 98, so I'd say so.
It does take a little time once a notebook is full, going back and recovering the notes and story ideas I may need later. But hey, that's a good use for another composition book!