Are you familiar with bias tape?  You can use it in a variety of ways like binding seams, finishing raw edges, ties for masks or making piping. If you're looking to add a little denim or a contrasting pop to your me-mades these bias tapes are it! 

This particular bias tape lightens in color when stretch and applied.  Please refer to the second photo.

80% viscose/ 18% polyester / 2% elastane / 20mm wide