Place graham cracker crumbs in a shallow dish. Coat rim of martini glass with honey, and dip into graham cracker crumbs to coat.
Combine milk and pumpkin puree in a cocktail shaker, and shake to combine. Pour in vodka and creme de cacao, and add ice. Shake well, and then strain into prepared martini glass. Garnish with a sprinkle of pumpkin pie spice.