Party in the Park
Organize a party in your local park or your backyard.
Dress up.. Sing some songs.. Play some games… Carve some pumpkins and enjoy the outdoors.
Ask if each person who comes to your party can bring their own pumpkins and, each person who comes can be responsible for 1 game or activity.
Maybe you even could bring a CD player.. So you have some scary music for your party!