Ask HN: Best way to recruit developers during a conference?

We are platinum sponsors in a major software developer conference, which means we have unlimited freedom (and for the sake of argument, budget) in order to come up with ideas to approach candidates during the conference.

What is the best way to recruit developers during a conference, approach them or get ourselves noticed? Put up banners next to the main stage saying We're hiring? Having girls in costumes walking around scanning badges? Setting up a kiosk and inviting people in for interviews on the spot?

I am looking for original and effective ideas to make the best of the event.