Here's another fun idea - vampire bite cupcakes! Just frost some cupcakes with vanilla icing, dip a toothpick in some red food coloring (you can also use raspberry puree), and add some "bloody" bite marks. Done is 30 seconds! See more great ideas at: http://halloweeninspirationideas.com/
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.