I’ve been looking at Lego Mindstorms NXT 2.0. It’s a kit for building and programming various robots, such as the ones pictured below. It has four inputs and three outputs, and comes with four sensors and three motors. There are also extra sensors and other accessories available separately. Anyway, it looks like a really fun and versatile set, and I found some great original creations on YouTube and other sites! Below are some pictures of robots provided by the kit.
I haven’t yet decided what I would make, but I have a few ideas…