They are young, hip and trendy. They do everything online and many can be spotted walking or biking to work or getting on and off the subway with earbuds in and eyes cast downward on their phones. They are the Millennial generation, adults ages 18 to 34, and they may be casual but they are also generous, kind and purposeful, and every nonprofit needs them. Lauren Sims, CURE Childhood Cancer’s Director of Development, is a Millennial and offers “Do’s and Don’ts” when it comes to reaching this generation.