This Pikachu Cootie-Catcher or Paper-Fortune-Teller was not as cute as the previous post. Maybe it was my poor artistic skills which lent a rather sinister look to this fold. And yes, I used a Post-It-Note for this folded creature too!
If you want to try this yourself, you can find the instructions on YouTube: https://www.youtube.com/watch?v=–TWYD5ks7k
On a more serious note, I read an interesting post on WordPress on the Maths of Origami. Take a look: https://wordpress.com/read/blogs/98312905/posts/6224