Last week Mini Me and I made a little pinball game from an old CD case! I saw the idea in my Parents magazine (here).
He did the majority of the work as we designed the face and put it together. It's a bit of a dud, as our small bead is not perfectly round and sometimes has trouble rolling over the craft foam as we try to get it into the mouth. It might have helped if I had a piece of craft foam big enough to not leave that ugly seam on the bottom.
But - he thinks it's great and again this morning he picked it up right when he got out of bed. After a few minutes I heard him say to himself, "This is fun!".