When I was a kid (maybe 3rd grade?) we made houses out of 7 cards that you could use to hold the next years cards. There's one on the bottom, 2 wide ones on the front and back, 2 tall ones on the sides, and then 2 wide again to make the roof. The tall cards get cut with a point to make the roof, and they all get hole punches in the corner where you tie them together with yarn. It was really cute and we used it for years. I think it's still around somewhere...if you're interested I could probably come up with a better description.