C.S.
Hi S.,
Here are a few more ideas that my 21 month old son enjoyed this summer that are also good year-round. Many towns have nature centers. We go to the Bay Village Nature Center to see the animals inside and outside (free of charge!). They also have a Twinkle Tots program in the planetarium on Thursday and Saturday mornings at 11:00. That costs $1 for each of you (including baby). That program is for babies on up and it is really good.
The area libraries are signing up for fall storytime (which is not just storytime anymore). This is also no charge.
Finally, there's a Gymboree in Westlake that offers classes with movement and music for different age levels. That does have a cost, but my son loved it!
Good luck!
C.