How do you make a door with a piece of paper brain teaser?

To create a "door" with a piece of paper in this brain teaser, you typically take a rectangular sheet of paper and fold it in a way that forms a door shape. Start by folding the paper in half lengthwise, then cut a rectangle from the folded edge to create the door's opening. Unfold the paper, and you'll have a door-like structure that can be opened and closed. This exercise often emphasizes creative thinking and problem-solving.