Crochet

That is a beautiful case, and I think it would work fine for most crochet hooks. Hooks tend to be shorter than knitting needles, but I don’t think that would be a problem. The case specifically mentions double-pointed needles, which typically range from 5 to 8 inches (13 to 20 cm). I just measured the F hook I have on hand, and it’s 5 1/2 inches (14 cm). You can sort of see where the handles of the crochet hooks end in that picture, looks like with an inch or two of extra space at the bottom. Some ergonomic crochet hooks have fat handles that wouldn’t fit in the slots, but you should be able to see what types of hooks your wife uses and gauge whether the handles would fit.