Here is cardboard Chartres Style Labyrinth I made by scoring and then tearing away the top layer. 

---

Here is a finger labyrinth I made out of cardboard. It is 2x2 feet. 

---

I love making labyrinths. This is a photo of my first Chartres-style labyrinth at the beach on Lake Michigan.  

Below is a labyrinth I made with seaweed at Sand Beach in Maine various years ago.