M.P.
We took my 9 month old son to mini gym at the Naperville Park District and he really enjoyed it. I also signed him up for a Toddlers in Action class, which was made up of several different stations for the toddlers to play at, for example "crafts," "train table," "tents" and the class incorporated song time as well. It was pretty decent. I find it hard to find a ton of weekend programs there but if you can make it during the week, they seem to offer a lot. Check out the libraries too for free storytime dates and times. Good luck!