Our local newspaper office also will sell the end rolls (they used to give them away, but too many people were asking for them and they realized they could make more $$$). But the paper is cheap and there is quite abit.
K-12 Kansas Art Teacher
Do you have any printing companies about. they will save the end cuts of paper for you. Try making a a letter on school stationary and sign it...You may not get to the right person when you visit but you can leave the letter with who ever is there.