We've already given you plenty of reasons to head on out to Expand this weekend in San Francisco, on top of a truly action-packed agenda. And anyone who has been to an Engadget event before knows we make it a habit of giving away boku gadgets to attendees. But what exactly could you go home with from Expand? We're glad you asked! We've worked with our sponsors and partners to come up with a seriously healthy list of giveaway items you could walk away with as your very own.