I found a lovely long Tunisian infinity scarf pattern, for DD, the pattern called for a size "J" flexible afghan hook with the long tube connected to it with a stopper at the end. I have that exact size, still in the pkg. I ordered it in. I'll practice in the New Year. I'm pretty sure the infinity scarf I'd planned to make DD would be better for me, since I've got 2 or 3 brown sweaters to match those colors of yarn. I don't see DD wearing those colors ever. I found another long striped Tunisian crochet infinity scarf from Coats & Clark or Caron's site. Forgot which. It'll be good for DD.
Also, I wrote a letter to DD, told her she can pick out yarn for infinity scarves, I can make them, to ship back to her. She loans me books all the time, so the trade off is fairly fair. Some books are for me to keep here, for as long as I want them, or when she wants them back. She needed to downsize into a cheaper smaller place, which was more affordable.