With my second graders, I use folders for everything that they do for the day. On one side of the folder it says "Finished Work" and on the other side it says "Unfinished Work." I love having the kids put their work in a folder because when I collect them, all of their work is already in number order. If a child forgot to write their name, I know whose paper it is. Also, I don't have to take lots of time to put all of their work in number order.
Be sure to go over and link up with Miss Kindergarten and take a look at all the other great teacher tips. Enjoy everyone!