Disclaimer: This works best in a club, and maybe it won’t work for everyone depending on how you present.

Bring bubbles. I went out last weekend to a techno concert, and I walked around the dance floor with my friends blowing bubbles and letting different girls take turns blowing bubbles. Not every girl will be into it, but for many it seems to immediately make you seem fun and approachable. At least 5 girls I know of noticed the bubbles, were wildly entertained, and wanted to be around me and know more about me. Got 3/5 numbers and have 2 dates set up this week from it.