Optional - combine the crushed graham crackers with the sprinkles and pour onto a plate.

Create a rim around your cocktail glass by wetting the rim with milk, then dipping it into the crushed graham crackers. Set aside.

In a cocktail shaker, add ice, half and half, vanilla, sugar, and cinnamon.

Pour into the prepared cocktail glass, straining the ice.

Garnish with a cookie and cinnamon stick, and serve immediately.