I really enjoy using an anal hook and a couple of ways I've used it in the past are on that thread. I like using them with anything that makes me squirm or tug on it so during blow jobs, vibes, during sex...
If you google anal hook tied to hair you'll get images of how people tie it.
Can't sat much about the knot used cause i'm not the one doing it but it can be done on the hair (mine is loooong and it has to start pony tail ish) , a collar is a good one as well or to your wrists in the back.. any kind of combination that works for you as soon as it can move a bit with you (cause there is no point if it's still all the time)
I'm not used to anal yet (Oh has a big 'instrument' but i really enjoy the hook like crazy !!