Orange-o-lanterns! (No link, just wanted to remind myself of the idea). Cut the top of the orange, hollow out (be sure to not cut lining too thin or it'll melt your candy). Make faces for the oranges and fill up with goodies!
Two bundt cakes make a pumpkin! The stem is a green ice cream cone. You could use any ice cream cone and frost it with green icing. The cakes can be any flavor. Use food coloring to make the orange icing. I would probably frost the whole cake.