I needed to replace  the crochet hook handle I had for years and was not going to pay over triple the price so I thought I would design my own but with a small loop at the end for holding stitch markers and to screw it together so it would not get loose.  You will need a few small rubber bands to wrap around the crochet hook (so the hook does not fall out).  Feel free to tinker about with it change the size if you need a smaller fit or bigger for your hand.