Postcards, Any paper pads,notebooks (Paul Anka drive)

For the second grade class in elementary school, the teacher asked us to bring the following, to share with class.
Items sought/writing project:
-envelopes of all kinds
-cards of all kinds
-notebooks
-letter paper or sheets of all kinds

They do a writing project in which they write letters to each other, but they are so bad at it, that they need a lot of drafts and go through a lot of paper and envelopes.

(Not paper that already has something on one side. Only blank paper.)