Here is the solution. This black Velcro of a centimeter wide, is just what you need. Soft to the touch, like velvet, it is actually on the principle of adhesive velcro. Just cut the required length taking into account the need for the band itself covers about two centimeters and you will have a discrete attachment, aesthetic, and reusable as many times as you like.
Here is a great product that is more economical since you can reuse clips as many times as necessary.