Directions Cut the piece of cardboard the size you’d like the floor of your house to be. Cut the paper one inch longer and two inches wider than the house size. Wrap the paper around a pencil and tape it. Slide the log off the pencil and glue it to the cardboard floor, making sure that the end of the log sticks off the cardboard on alternating sides. Make your house as tall as you’d like it. When you’re ready to start the roof, cut the logs accordingly. Add a cardboard roof once you have the logs assembled. You can also freeform any structure you’d like with the logs you’ve created, if you would like something other than a house.