Lou's teachers had the best idea. I tried to get it together for my own class on the last day but gave up. I have it in my plan book to get it together much more in advance next year.
Anyway, I thought these autograph books were just awesome. Organizationally speaking, you could get these together a number of ways. His class had them all ready put together with blank pages. The kids sat in a circle and wrote their name on a card, flipped the page, and passed, wrote their name, flipped pages, pass, all around the circle. You could also have the kids write their name on every page in a book and then the teacher take them home and take the books apart and reassemble with correctly. Next year, I'm thinking that it would be easy to just use blank cards as your sign in activity when they enter, it will just take a few weeks to get them all collected.