It's almost too easy to do dirty things with pumpkins or other varieties of giant dildo-shaped gourds, but in case you're too busy tricking and/or treating this weekend to come up with anything by way of inspiration, these two sites will give you a good idea of all the smutty seasonal vegetable possibilities in store.
Pumpkin Porn (pumpkin-porn.com, via Masturbate for Peace)
Pumpkin Sex Toys (homemade-sex-toys.com)