Boxwars

Boxwars bills itself as "a battle of elite cardboard warriors," and I suppose they're right - though I'm not entirely sure any elite warrior worth their salt would clad themselves in armor made of, well, cardboard. Started in Europe, the site is the world headquarters for a group of folks who periodically dress up in cardboard armor and do SCA-like battle. The site lists a schedule, results of past battles, and even a forum where enthusiasts and fans alike can discuss the ins and out of box-warring, proving once and for all that, occasionally, you actually have more fun if you insist on thinking inside the box.