These look really useful

Designer notebooks Field Notes are soft-cover, pocket-sized memo books for jotting ideas, making lists and sketching. Each 3.5×5.5″ Field Notes book contains 48 pages of graph paper and from all appearances, will survive your back pocket a lot better than the stiffer Moleskine.

Check ’em out at Lifehacker. There’s a $5 dollar off deal from the company in a comment if you buy three packs of three notebooks (otherwise it’s $9.95 for three notebooks, plus shipping).