Baby Einstein really seems to have it all figured out. They have "entertainment" and learning products for infants, babies and small children. Ever since RJ was 5 weeks old, he has so much enjoyed his Baby Einstein play pen. Essentially, he lies on his back and looks up at a myriad of flying soft toys (birds, worms, bugs, etc), as well as a mirror (so he can look at his cute face). In the center of the play pen, suspended above his head, is a star which plays a light pattern and electronic music which seems to be programmed to stimulate RJ and fixiate him.
This whole little unit is one of RJ's favorite places to be and immerses him in happiness.