It's so much fun when kids can make something from their hands. Here's a good craft from playing with words 365 using hand cut outs from black paper and pom poms to create cute spiders.
Good for ages 4 and up.
Get the instructions here:
http://www.playingwithwords365.com/2011/10/hand-print-spiders-for-halloween/
Preschool palace uses paint and creates handprint spiders, they also create baby spiders with thumb prints and black marker.
Get the instructions here:
http://www.preschoolpalace.org/October2012.html
The mother huddle cuts out the hand print to make it a spider the kids can play with.
Get the instructions here:
http://www.themotherhuddle.com/its-a-spider/
Mommy minded makes cards and bags.
Get the instructions here:
http://mommyminded.blogspot.com/2010/09/handprint-spiders-craft.html
Fun at home with kids makes clay creatures.
Get the instructions here:
http://www.funathomewithkids.com/2013/10/diy-kid-halloween-keepsake-handprint.html
Crafts by courtney adds texture to her spiders.
Get the instructions here:
http://www.craftsbycourtney.com/how-to-crafts/handprint-spiders/