Looking for ways to keep your kids with short-attention spans, more engaged? You might want to try, Kiwi Crate, a subscription service designed for busy parents. Here's how it works. Sign up for a monthly subscription, and get a box full of crafts delivered to your home once a month. Kids then can explore and build their own art projects. SmartPlanet's Sumi Das looks inside one of the crates with the company CEO Sandra Oh Lin.