Runescape's Blue Party Hat
RuneScape, the hugely popular MMORPG, is by far one of the best and worst examples of players dropping serious coin for in-game purchases. In 2001, the game held a Christmas event in which players were given special items. The blue party hat turned out to be the rarest of them all and has spawned into something of a RuneScape legend. Today, the pixelated hat, which does nothing but look different, has routinely fetched upwards of $4,000.