Couple of other ones to add if you want to use some "social proof" to neg her AND open her at the same time (works great for girls who are 9s and 10s if you already have some girls around you)
If she is the girl who's got ALL the guys around her, and logistics just won't let you approach, have the bartender give her a glass of water and tell her its from you.... Might as well flick her in the forehead lol
Or I like the lint opener... Grab some lint from your dryer before you go out.. Walk up to her, don't say anything, tap her on the shoulder...reach up above her head on her hair with a piece of lint in your hand. Hand it to her and walk away... Come back a few minutes later and do it again... This time with a bigger piece of lint. She will be trying to impress you that second time around and you are in!
Hope this helps someone