Brainstorming - Help me choose a topic

Thanks, Yo! This all sounds perfect for what we want to achieve. I downloaded IDEO’s human centered design book and there is a great section on brainstorming, brainstorming rules etc. I think for tomorrows meeting I am going to come up with a topic, for instance we do alot of work with plastics, so maybe I will pick a persona build him/her up a bit, and then concentrate the brainstorm around a 3-d printer, etc. I am trying to keep this one as basic as possible and go for the method of coming up with as many ideas as possible. MY (aside from the meeting as a whole) main objective is to make them realize its ok to have ideas that arent backed by solid scientific evidence, and that maybe their first ideas or what they may think is the best idea is not always the greatest. I think the next meeting (I do this type of thing weekly) will be more towards what you were saying, sounds great!