Magic: The Gathering is a collectible card game created by mathematics professor Richard Garfield and introduced in 1993 by Wizards of the Coast. I grew up seeing my friends collect this it still exists today. Now you can build these deck boxes to put your cards in.
Magic: The Gathering Papercraft Deck Box
Awesome man! I kind of got inspired by this stuff and developed my own version: http://www.fooniks.com/eriprojekte/deckbox-spellbook-int.html