hmm, my wrists crack the most out of all my joints actually. in fact what i usually do, will be just to sit at a desk or someplace where i'm able to rest my chin in my hand, and then just straighten my fingers out underneath my jaw and push my wrist inward (toward my face/jaw) and angle it upward a little bit. looks weird so i don't do it in public haha. i can crack it multiple times in under a minute, really big cracks too, it's amazing! the other wrist doesn't do it as loudly but it does it just as often. let me know if it works for you just as well.
lol
