C.K.
Hey K.!
There is a group at my church (Fellowship on Middlebrook) that meets on Tuesdays, one in the am (Moms N More, meets 9-noon) and one in the pm (Mom2Mom, meets 7-9). They have weekly playdates based on the age of your child (the group for your son would be the under 3 group). The group is not just made up of moms from Fellowship but from local churches also, so I'm sure you would be welcomed with open arms (even if you don't attend a church). Here is a link if you want to check it out: http://women.fefc.com/moms-ministries/
And not related to playdates, check out the library - they have storytimes for kids based on their ages. I go to the one in Fountain City for kids up to 2 and it is awesome (and free)! Fridays at 11. Lots of kids there - my son loves it!!
Cyndi