Pumpkin in a lace stocking. I've planted a bunch of mini white pumpkins. White lace stockings on them might be a nice outdoorsy Autumn touch. Inexpensive and kinda unexpected. These might be cute on the outside tables under the arbor too.
Black nails + gold glitter on one nail. This is so easy to do, you don't even need gold glitter nail polish.just paint your nails black or whatever colour and while it's still wet, shake some glitter onto it