We had an open studio here at Wilmette last night. Even though I only fed them a small amount of small cookies, the kids were totally hopped up on goofballs.
I worked with our trusty teen volunteer, Stephen. Nine kids showed up--almost a full house. We split up the group--new users on one side of the tables, experienced users on the other side. I gave the new users a basic intro to Scratch, then walked them through making a digital Magic 8 Ball. The experienced Scratchers, guided by Stephen, were allowed to work on their own projects, but some of them worked on the 8 ball.
The kids loved the 8 ball project. In fact, it made them extremely hyper (or was it the cookies?). They thought it was hilarious to ask questions about their friends and to come up with silly answers. Part of the reason the kids were so boisterous was that many of them knew each other. This created noise, but it also fostered collaboration on the Scratch projects. I did see the kids helping each other a lot.
From my point of view, I liked this project because it was fairly simple and the kids were able to finish it in the time we had. I think it gave them a fair introduction to Scratch that they could process in two hours. And since they had fun, they may be back for more!
I'll post an example project and the directions. The project actually came from the book Scratch Programming for Teens by Jerry Lee Ford, but I adapted it a little for my purposes and also for Scratch 1.4 (it uses the ask and answer feature).