Duct tape hairties.
Cut 5 petal shaped things from a peice of ducttape folded over it's self.
Cut two little circles of ducttape (still with a sticky side on them)these are the flower center.
Cut a lenght of hat elastic for the loopy bit, tie it into a loop, and cut the dangly bits quite close to knot (but not too close!)
Put the petals on to the sticky center part in a circle.
Put the knot of the elastic on to this as well and then stick the other sticky center part on top.