We used cookie cutters in Halloween shapes and a paint recipe called Shiny Paint.
The recipe calls for the following:
liquid tempera paint for color, 4 tablespoons corn syrup and 1 1/2 teaspoons liquid dishwashing soap
The recipe was not clear on how much paint to use, so I just went by the consistency I wanted (a little thicker so the paint sticks to the edge of the cookie cutter). The recipe also stated that the paint is very sticky and dries slower than regular paint.
The kids loved doing this, and the best part was popping the bubbles that would be left behind on the paper after they lifted off the cookie cutter. It would splatter a little and left behind a nice texture.