Brownie/Pretzel Skeletons: Cut brownies into squares and cover in ganache. Place short bamboo skewer near back of brownie. Slip white chocolate pretzels over skewer. Top with marshmallow; face drawn on w/ edible marker.
You could do the BOO letters in Black, Orange, and Green. You could do something similar with FALL. Front Door Decorations for Halloween. Could do FALL instead in brown with orange ribbon so it could stay up for more than just Halloween