This is for an art project, hence Cafe Society. It ried fractals, too busy. Tried logrhythmic, too swirly. What I need is a nice smooth curve that starts one way and then goes the other, but not as regular as a sine wave. Sort of French Curve-ish, but just one, not a bunch of 'em.
Dimensions are 16" long by 6" wide, to be specific.