I recently ran some beginners crochet classes to make twisted rib headbands and what fun we had!
We used various shades of Drops Nepal with a 6mm hook, and a starting chain of 72. The entire headband is worked in the back loop only, and most people chose to make one that was 11 ‘ridges’ wide. This takes pretty much all of a 50g ball.
It would be fair to say that I learned a lot by teaching the class, and I am delighted that everyone who attended ended up with an actual headband!
Simply hooked 