I wear one nice mens silver bracelet, a second bracelet made of silver skulls and a thick silver band on the middle finger of my left hand. Nothing on my right.
I am partial to handcuffs. go into the club sportin those (preferrably with just one side on your wrist) and you get some instant street cred bro. Nothing says "hard muthafucka" like a half-clasped pair of cuffs on yo wrists.
eh.. it depends... i wouldn't recommend wearing anything too wide on your wrists if you have big forearms.. especially if you are short... i rock pretty thick ones from time to time.. i guess just make sure they aren't too tight on your wrists.