How to make a tetrapala

You need:

• An empty brick (of milk, juice,...)
• Scissors
• Paper (better recycled)
• Sticky paper

First of all, you have to clean the brick  after cutting the extreme where  you poured  the content. Next fold the paper and put inside the brick. If it is necessary, cut the paper in a properly shape and leave some paper out. Fold the surplus paper covering the edge of the brick and fixed it with sticky paper. Cut the corners in orden to allow the air moving into the glove.