One of my favorite places on earth, Knitting Daily, has an ebook available (for free!) with 8 knitting patterns for kids.
Here are some of the patterns included:
Petite Feet by Interweave Staff
Back to School by Norah Gaughan (pullover)
Unspun Roving Mittens by Amy Clarke Moore
You Kiss a Hundred Frogs Purse by Laura Rintala
Earflap Hats by Knitscene Design Team
Simply enter your email address at the site, and the ebook is yours!