MrsMeyers:
Look at this link and see Martha's Black Widow makeup, the part I thought you might be able to use is how they spirit-gum-glued spiders on her face and neck. I used that look one year and it was great (again, before I got a digital camera). I had different sizes, stayed on the whole day, looked GREAT!
Scary Makeup and more holiday recipes, crafts projects, decorating tips, gift ideas, and simple solutions on marthastewart.com