Invitation: Using orange fun foam (available at discount stores in the crafts department), cut a pumpkin shape. (A cookie cutter works well to trace around.) Make dotted lines using a permanent pen indicating the eyes, nose, and mouth to be cut out. Put all the party information on the invitation and send.
Decorating: Carve two pumpkins with simple faces. Place one carved pumpkin atop the other one, stacking the two. Put a large candle in the top pumpkin, place on a tray surrounded with autumn leaves and light the candle for the main centerpiece.
Activities/Crafts: Stamp small brown paper bags with a Halloween motif. Make as many bags as you expect guests. Fill each bag with inexpensive pumpkin-carving tools and two sizes of permanent black markers (in case some guests prefer drawing on their pumpkins).