* Sponsor wrangler: Drafts a message to send to potential sponsors, follows up leads from others for potential sponsors, collects info, logos (in vector format), and money from sponsors and also sees that receipts (if necessary) are issued at the end. This is your accounts receivable person and it's a key thing to get right.

* Food Czar: It's not completely required for a Barcamp, but it's definitely the standard. You have x number of people to feed for 24 hrs, including a pre-party, a basic breakfast, and a lunch. Obviously, you can only pay for as much of this as you have sponsor money for. See that breakfast and lunch get taken care of first, and then pay for as much of the pre-party as possible. Best to keep the meals simple (but good), have some veggie options, and try to keep costs down. This will be your biggest expenditure.

* T-shirt Master: Not only do people like shirts, but they're possibly your biggest offering to sponsors since it's a shared promotional item. Basic shirt is your barcamp logo on the front, all the sponsor logos (tastefully) arranged on the back (I recommend in 1-color only). The range of shirts out there is enormous, but people will appreciate a good quality, non white (or black) colored, well-fitting shirt. It's a bit more expensive, but providing some women's shirts (not just unisex smalls) is a really nice touch. (I recommend American Apparel or Bella fine-jersey t-shirts - not the super tight fitted kind). Try to have t-shirts ordered (quanities decided and artwork submitted) 2 weeks before your event. 10 days at ABSOLUTE minimum. Remember, weird things happen in the supply chain. Check in with your t-shirt vendor often if you want to see your shirts on time.

* Wi-Fi Guru: People are going to want wi-fi, and may even need it for their presentation. In order to provide this, you're going to need a decent internet connection and several routers to handle the traffic. Someone needs to set this up and keep it running during the camp.