On Saturday, I spent the day at the Product Design and Development presentations. My dad went with me last year, and this year he brought my mom along. We all had a great time.
Most of the inventions were pretty impressive in terms of ideas, the actual product, or just the presentation. I found only a couple of the presentations to drag; most went very quickly.
We went second-to-last with ours. Rachael and I presented, and I think it went really well. I will post a link to our product as soon as our patent comes through. =)