Mommy and Me classes are pretty good. I have taken both my kids and I would highly recommend them.
You need to be with your baby and the class duration is around 2-3 hrs, depending on kids age. These classes are very good for the baby and for the Mom too. You get to meet and socialize with other fellow moms with same age kids. The class has circle time ( for songs, etc), lot of different and good toys ( toys that we won't have at home :) ), games and outside play.
I used to go 3 times a week for this class. Your area might have different schedule but if you can find a Mommy and Me class somewhere nearby, do give it a try.
regards,
Anjali