K.M.
Hi J.,
Las Madres Neighborhood Playgroup is a great Moms (and Dads and caregivers) group. We have playdates, mom's night out, scrapbooking night, playgroups for working moms, we have monthly speaker nights, etc.
Our playgroups go by year baby was born (children between 0-5 years old) and then by region (if you live in Willow Glenn, Saratoga, Los Gatos, etc)
You get 30-day trial membership to see if Las Madres would be something you'd like to join. Oh and no you are not obligated to host playdates at your home if you don't want to (at least I've never been asked, always someones volunteer or we meet at parks, and you are not to be 'interviewed' to see if you can join (just to be clear on that :)
website is: lasmadres.org
Hope you find it useful!
K.