About 100 unused envelopes... the pre-addressed, return postage paid kind often received along with junk mail.
Rather than just recycle them in the black box, I save them up and have about 100 of these, mostly about 9" x 4".
Previous batch taken by elementary school teacher to be used for school projects. If you can use them for something, come and get them.
Pick up anytime in Old Barrhaven - K2J 2P6