A rope bracelet - reminds me of making friendship bracelets back in the day. My right second toe used to go numb because I'd hook the end of the bracelet over it, and then knot embroidery floss for HOURS.
These lovely bracelets would be the perfect gift to your BFF. Watch the video, and learn how to craft stackable bracelets using the “square knots” technique. See video and written instructions here: (Top Knot Outfit)