What's an oversized Dairy Queen ice cream spoon worth? Apparently a lot, when it's signed by Warren Buffett. A 33-inch, 5-pound red metal spoon bearing the signature of the billionaire investor fetched $4,500 for charity in an online auction on eBay that ended Friday. The auction, which began July 21, drew 61 bids. The proceeds will go to Children's Miracle Network, an organization that raises funds for children's hospitals. The charitable group said it will give the money to Gillette Children's Hospital in Minneapolis, which also is the home of Dairy Queen. The winning bidder wasn't identified. Buffett's Omaha, Neb.-based holding company, Berkshire Hathaway Inc., owns Dairy Queen. The giant spoon was signed by Buffett when Dairy Queen's "Blizzardmobile" made a stop at the Dairy Queen booth during the Berkshire Hathaway shareholders meeting in May.