Finding and selling Britney Spears' chewing gum was apparently a popular way to make some cash in the early 2000s. According to CBS News, more than two dozen eBay auctions offering gum chewed by the pop star existed in September 2004. While there was no way to actually prove the gum was authentic, some auctions still pulled in more than $14,000.
Britney Spears' gum
A lock of David Bowie's hair is the latest weird celebrity item to be available for purchase, but it's definitely not the first -- nor the strangest.