In this tutorial I'll teach you how to make an Origami Hat. You'll need a rectangular piece of paper. (Printer paper works)
Fold the paper in half from top to bottom
Heap the smaller edge and fold it over
Now unfold the paper.
Fold the top part with creases in to triangles leaving a little space at the bottom
Fold the bottom half up
Repeat step 5 on the backside
Pop open the bottom and there you go!