i crack my neck in various ways…
tensing neck muscles a bit and turning head side to side gets the easy ones
i used my hand to push my chin from side to side to get the more stubborn ones
sometimes i use hand on chin + hand on crown of my head to really twist. i fear i might break my own neck and end up on the news...
phalanges are the bessssst. my personal favorite is cracking the base of the thumb (right near the wrist). not many ppl can do it on their own but need a buddy.
lately, i'm digging the sternum crack. such a faint, delicate pop. i can usually do this by pulling both shoulders back, like i'm trying to get my shoulder blades to touch behind my back. this causes my chest to open up a bit and then.. *pop! NOTE - one of the first times i got my sternum to crack, it ended up hurting pretty badly for several minutes. never happened again, but i get worried...