The farmers' market in Pasadena is a lot of fun on Saturday mornings. We usually get some fresh strawberries and cinnamon rolls and have breakfast there. Often there are musicians playing as well. There is also a smaller version of this market on Tuesday mornings, but I haven't been to it yet.
Here's a link for times and locations:
www.pasadenafarmersmarket.org/
I've heard that South Pasadena has one on Thursday evenings as well.

Pasadena Library Storytimes
Pajama Storytime - Ages: 3-8
Snuggle up in flannel or fleece, grab a teddy bear, and head to Hastings Library (3325 E. Orange Grove Boulevard) for a pre-bedtime story! The fun typically lasts about 30 minutes and includes songs and fingerplays. [626.744.7262; http://www.ci.pasadena.ca.us/library]
Ongoing Each Mon at 7PM; check with location for exceptions.
Time: 10:15am & 11:15am
Cost: Free Preschool Storytime - Ages: 3-5
Simple picture books, songs, and fingerplays await little participants of Hastings Branch (3325 East Orange Grove Boulevard) Library's preschool storytime. Two storytimes are offered on Wednesday mornings; no advanced registration required. [626.744.7262; http://www.ci.pasadena.ca.us/library]
Infant & Toddler Storytime - Ages: 0-2
It's never too early to foster a love of words and books in children. This storytime caters to the barely-able-to-sit-still tykes, and amazingly, they manage to stay put for the simple stories, songs, and fingerplays. No advanced registration required. [626.744.7272; http://www.ci.pasadena.ca.us/library]
Santa Catalina Branch - 999 East Washington Boulevard
Ongoing Each Wed at 10:15AM; check with location for exceptions.