Interesting question, since I assume that the VanishingPoint account is a "front" representing several people. In which case, you have either to share it out between yourselves somehow, with a minimum of bloodshed (who actually filled in the survey form?), or spend it on stuff for Vanishing point as a whole. For example, items that you might want to make an add-on for; software that you might need in your work; that sort of thing.