Make your own Turk's Head bracelet with this "kit". Includes line and instructions. Yes, there is enough line for even adult-sized wrists.
From the kit you can make 3 strand bracelets. Enough line included to make one Medium (7.5"), or one Large (8"), or one XL (8.5") bracelet or two Small (7") bracelets.
(Also pictured here are what your finished bracelet can look like.)
My high schooler is very amused that his favorite gift was a piece of rope. He tied the bracelet at least three times before he was satisfied. Wears it daily.
My Daughter had a good time making herself a bracelet, and learned about Turkshead at the same time.