Making stained glass cookies is really fun and something you should try to do at least once. By using hard candies it makes the whole process easier and more kid friendly (they still get hot though!). Diary of a Mad Hausfrau has a nice tutorial for stained glass mosaic cookies and also shares this fabulous poinsettia version!
These beaded napkin rings double as place cards and are so easy to make they could keep kids occupied during Thanksgiving meal preparation and still be ready for the table settings. The instructions are at Art Bar Blog.