To make the caps I used store bought fondant (Wiltons Fondant) because they needed to dry nice and firm. I made them a couple days in advance to make sure they didn’t wilt, the bottom is just a strip of home made fondant (see Tricks of the Trade for recipe) that I cut and rolled with a tiny bit of water to make it stick in a circle. I let these dry completely before placing the square piece of fondant on top, securing that with a bit of meringue powder mixed with a tiny bit of water. For the top “ribbon” I just used Wiltons Melties.