Chewbacca
Vampire

I use cheap exterior latex house paint. It dries fairly quickly and is inherently water resistant. You can use the oops paint which is usually about $5 a gallon. If you can't find the color you want you can always paint over it when its dry. I use news print as well as those blue shop paper towels because they stretch and conform to contours better than newspaper. Here's a pic of a giant spider I did last year.