I am not good at sewing but these were an easy enough project for me. I used fabric bonder for the little fabric wing on the blue one, it is enough to prevent the fraying and it makes that tiny piece of fabric easier to work with.
All you need is felt, assorted ribbons, a few spare buttons and a cute little design.
Tip: an heavy button at the bottom of the ribbon is nice to make it fall straight. I just used a spare metal button from a jacket on the blue one.