https://www.exploratorium.edu/tinkering/projects/cardboard-automata
Project Ideas
https://www.sciencebuddies.org/stem-activities/cardboard-automata
Exploratorium- Made in the Tinker Studio
https://www.exploratorium.edu/tinkering/blog/2014/12/05/made-in-the-tinkering-studio-cardboard-automata-and-more-