Crawl Through a Hole in a Sheet of A4 Paper

One of my favourite ice-breakers that involves thinking outside the box.

 Typically, students see it as a 2-dimensional problem. This video by The Laughing Clock serves as a nice prompt think more broadly.

Below is an image which can be printed out. Cutting along each line forms a "snake" with a line running along it. Carefully opening it up creates a hole larger than the sheet you started with.

With a thinner snake, it starts to look more like lined paper. It also becomes incredibly delicate.

The hole in the paper has a perimeter double the length of the line on the snake (the line in red) and given that we are only limited by the number of lines we draw, we can theoretically make a hole as big as we want. Realistically, the thin paper makes it very easy to tear, but it's interesting to think that we can create a hole in something that's bigger than the original object.