I have also packaged 10 all occasion cards from my stash as a prize for the family event this summer. I used a box that previously held Christmas cards. My sister has been picking up boxes that will hold A2 sized cards at the REUSE center for me. I cut an opening on the sleeve large enough to remove the graphic and added a clear plastic (transparency) on the back of the opening to keep the cards clean. This box perfectly holds 10 cards!! Therese