i used a checkbook/wallet type pattern, made it vertical rather than horizantally (so it opens like a paperback) with pockets on either side and stitched a pc of batting in like the pages... i can pin in anything i need to match... and i don't lose it...
was great on the last shop hop when i wanted 9 different red on white and 9 different blue on white prints for a couple qov i'm working on... i kept a scissors in the trunk of the car, snipped a little pc off each one as i bought it & pinned it in with it's batch.