Step 3: Sides. Prima Homemade BirdHouse made from Recycled Boxes - YouTube Take a piece of wire. Ours is 2″ across. Cardboard Box Birds Step 1: The Base. Supplies: Cardboard (any recycled; cereal box, amazon package, etc), Tape/glue, Scissors, Pencil crayons/pens, PomPom Chick. Decorate it how you want and have fun learning about birds. Step 2: Preparations for the Feet. Tear three strips of cardboard for the breast part. This carboard birhouse is also perfect for indoor decorating . Make your very own cardboard bird house to put your PomPom Chick inside! Add the nesting supplies to the bottom of the box. Tape the lid closed. Place the box in an upright position on the end as shown in the pictures. It’s so easy and fun to make! The length depends on the size of your bird. Building a birdhouse out of cardboard with your kids ! It is not just a good way to make a great birdhouse, but also gives you the opportunity to recycle some materials that might be lying around your home. Cut a large square in the lid of the box leaving about two inches at the bottom and one around the edges. Cut a hole in the base of the box big enough for a bird to fit through.