Aeroshot
Well, we suppose it was only a matter of time. Aeroshot ($TBA) provides you with a portable burst of caffeine — 100mg of it, to be exact — via a fine powder that falls out of the air and dissolves instantly in your mouth. Oh, and since it's not liquid, you should be able to carry it through security, although we'd advise taking it easy on all the "fine powder" talk until you're well away from the aeropuerto. [Scouted by Sam]