I usually tie and glue a piece of marabou into a circle (so that the strings aren't sticking out). Then you can wrap it into the loopy bow or glue a small circle of the marabou to one of the loops itself.
Marabou is not my favorite, though. Gets all over the place, including in my nose! LOL.
Deanna www.birdsongbows.etsy.com www.birdsongbows.com