Saturday the first-ever Caine's Arcade Global Cardboard Challenge, inspired by Caine's Arcade, was held in Boyle Heights.
The idea is simple: Put kids together with a lot of cardboard and some crafting tools and see what kind of creative things they come up with.
There was also a cardboard parade and a cardboard maze, and Caine himself got a special citation from Mayor Antonio Villaraigosa.
"There's tens of thousands of kids around the world who've been inspired by Caine, who are building amazing things using cardboard and their imagination," said Nirvan Mullick, who made the film "Caine's Arcade."
The event was free, with a suggested donation of $2. The money raised will benefit the Imagination Foundation, a non-profit organization that fosters creativity in kids.