advertisement 06-27-2013 DESIGN A Wooden Train Set That Lets Kids Compose Tunes Ricardo Seola’s idea for a musical train languished for years until Quirky’s product engineers came to the rescue.

Most kids are happy to push around an empty cardboard box, so it’s no surprise they’d also settle for a boring wooden train set. But as an adult you know better, and for around $70 you can ...

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