I built this with my daughter. It was pretty fun but some things could be improved. For instance, some of the soldering spots are pretty close to each other. Definitely not for beginners. Also, it took us a while to figure out that we had to make noise (?!) for the mouse to move. Still not sure why there is a mic in there... Warning: the mouse follows wide tape much better than regular electrical tape. Still it was a fun afternoon project.
