A click-clack box makes a great route-sheet holder, however, if this is a last minute job - 5 minutes before departure - those plastic takeaway or salad containers usually survive one or two rides as well - prepare them the same way as described with the click-clack box above. Once you have built 2 or 3 of them you will be willing to spend $10 on a click-clack box and appreciate the durability.