Attributions
- "14542673025_9601634753_o" by Google (https://vr.google.com/cardboard/)
- "Make simple drawings in AR with Just a Line" by Google (https://www.youtube.com/watch?v=M5zxNMAQVR0) -- Licensed by Standard Youtube License (https://www.youtube.com/static?template=terms)
- "CAVE Crayoland" by Dave Pape (https://commons.wikimedia.org/wiki/File:CAVE_Crayoland.jpg) -- Licensed by CC0 Public Domain (https://creativecommons.org/publicdomain/zero/1.0/deed.en)