Everything in The Dangerous Book for Boys book in the show was handmade.
"Building a Treehouse" is an actual chapter in the original Dangerous Book for Boys by Conn and Hal Iggulden.
It took over 2 hours to attach the fake beard to Chris' face for the island scene.
The Tiger Twins wasn't a real show.
Toys representing all of Wyatt's fantasies over the entire season are seen in the lunch box.