Ian Culhane won $10,000 for designing a 7-foot-tall toy roller coaster. Not bad for a 10-year-old. Ian's creation was on display at the Toys "R" Us store in Times Square, where he accepted the prize from the president of K'NEX Brands, a building toy company in Hatfield, Pa. The boy, who first started playing with building sets when he was 4, was one of thousands of children ages 6 to 12 who entered the annual contest.
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