I've heard that the Brookfield library has a 6-12 month storytime program. No clue about Danbury library... but I'd check there first, if it's closer to you. Also, look up moms club online. They are set up by area... 1 in New Milford, 2 in Brookfield... not sure about Danbury. Moms club provides social outlets for moms and kids... with organized playgroups, a moms nite out once/ month, and seasonal events, etc. I just joined our moms club this year... and it's been great to get to know more moms in the area. Also, it's fairly inexpensive: ours is just $25/year.
Personally, I attend MOPS (mothers of preschoolers) in Bethel, and LOVE IT! It is designed as a time-out for moms. There is childcare, a speaker, breakfast and craft/creative activity for moms. It was a lifesaver when I moved here (New Milford) almost 2 years ago. If you'd like to visit (there's only one session left before the break for summer-- May 13th) let me know and I can connect you with the right people.
I'm assuming you'll get tons of responses, but there are also things like Gymboree, classes at parks and rec, indoor play areas like Planet Play (in New Milford), and Fun Factor (in Brookfield)... many of these can be researched online, or probably a phone call to your parks and rec. Also, I don't know if there's a YWCA in Danbury, but there is one in Brookfield and I think they have classes and things for that age group, as well.
Feel free to email me... and welcome to the area!!! Maybe we'll meet sometime;)
darci