Dressing up is one of the best things about Halloween. However, it also can be one of the most wasteful, as millions of Americans purchase ready-made costumes, wear them once, then cast them off. Instead of filling up landfills with once-used plastics and fabrics, get creative, and come up with your own unique look with reused and recycled materials. You'll save money, as well as reduce impact on the planet.

Instructables.com user “joto2” made this little warrior's armor from cardboard boxes, with one side peeled off to reveal corrugation. The smart origami helmet was made from an old calendar, with the expert skill and patience of ... a samurai (as well as scissors, watercolor, tape and a stapler).