In addition to the pattern from Plymouth in the previous post, here is a scarf from Classic Elite to knit for breast cancer awareness, (it is the same as the one I posted last year) as well as a few others. If you have a pattern you would like to share, feel free to post a comment with info.
Classic Elite Scarf --- Also from Classic Elite, here are a few more pink patterns.
Lion Brand Pink Ribbon Scarf
Knitty.com - there are several patterns here, also Tit Bits on the Knitty site
Ribbon Illusion Dishcloth
Several items from Bernat, crochet included
You can also purchase a pink Denise Interchangeable Needle set!