I regularly use six notepads or journals: an Exacompta Nostalgie journal as a bird log in the breakfast nook; a Rhodia No. 8 in the kitchen utility drawer for shopping lists; a scratch pad from Mitchell Graphics, our catalog and postcard printer is by my laptop; a Rhodia No. 18-ruled in my Mills canvas work bag; a beat-up Clairefontaine memo book in the car for quick notes, and a Clairefontaine Roadbook in a zip lock bag that travels with me in my kayak.
The notepad that gets the most use in the one in my Mills bag. I use the bag as a lap desk on the weekend commute back and forth from New York to Greenport. I find that writing notes and doing weekly planning helps me to unwind.