How did you make extra cash as a kid? Did you babysit or pick up a paper route? Across the country, kids are taking these ideas and turning them into fully comprehensive businesses with operating plans and profit sharing. In New York, for example, a then 13-year-old Noa Mintz moved beyond the idea of babysitting to create an entire operational service that matches nannies with families. Nannies by Noa now boasts upwards of 200 clients and major profits, and Noa has been profiled by the likes of Fortune, CNN Money and Teen Vogue.