Although there have been two different Math Mondays touching just tangentially on the wonderful world of string art, it has never covered the basics of the area, and it's high time. (Why is it high time? Hint: in preparation for non-basics to come...) The fundamental idea is that you create one or more series of connection points, regular in some way, and then stretch taut strings between the connections (again, typically in some orderly fashion), producing (hopefully!) an interesting, beautiful, and/or mathematically significant overall pattern.