Games/Activities
Have a Pinata
Movie Drinking Game
If you are of legal drinking age then this will be a fun game. Just pick a scary/Halloween themed movie and take a drink every time something a person dies or whatever you and your friends decide to drink on.
Pumpkin Carving
Candy Corn Relay
Grab a spoon. Place a candy corn on it. Hold the spoon with the candy corn in your mouth and race. The goal is to carry the spoon and candy corn in your mouth and drop it off into a bowl in which friends must compete and race to see who drops theirs in the bowl first.
Pin the Tail on the Donkey
I did this last year for a Halloween Party i hosted. I put some fake blood on the picture and drew on it a little to make it a zombie donkey. It was a lot of fun.