I follow several knitting and crochet blogs. Sarah London is one very colorful crocheter. She posted a mystery project Sunday. I went this morning and picked up my green and white Christmas yarn and have begun. I do like mystery projects provided there is plenty of time to complete the project. I am using 'Caron Simply Soft' 100% acrylic in dark sage and white. You can see the entire project by following along with Sarah at her blog: http://sarahlondon.wordpress.com/2009/11/08/mystery-christmas-crochet-project/
I am very excited to see what it becomes. I have finished the first 3 squares this morning.