Earlier this month, Brian posted about his casual special events novelty selling gig.   Special events are a great way to add a bit of extra cash since they are infrequent, flexible, and often, fun. Photo Credit: http://www.flickr.com/photos/twon/ I’ve been picking up some extra cash myself this summer, so here are my ideas: Mystery shopping: I do a few shops a month which nets me around $50...

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