I have some wrist issues from an old injury and honestly I find that what aggravates mine the most is just doing any one particular thing too repetitively. So I flit around between crochet, knitting and cross stitch for the variety of movement.

There are things you can do crochet-wise though, for example you'll mostly see people flicking the wrist of their hand that holds the hook, but if mine is playing up I'll wedge my elbow against something and keep that wrist as still as possible and just do all the movement with my other hand.

p.s. yes you can definitely use wool yarn but I'm not Canadian so can't help with the other part of that 😄