The Vault: 18 project plans for building with Cardboard

Building box structures is really, really fun for adults as well as kids. With these plans the fun becomes learning and forges bonds between adults and kids.
The Vault includes 17 imaginative project plans for building with cardboard:
Lemonade Stand Carnival Booth
Nativity Stable
Princess Carriage
Storybook Cottage
Egyptian Pyramid
Skyscraper
Santa's Sleigh
Astro Spaceship
Wild West Stable
Steam Train
King's Throne
Barnyard Bonanza
Magic Castle
Fire Engine
Fridge-Box Maze
Moving-Box Maze
Pirate Ship
Old world village