Driveway/walkway ice remover
How many of you have seen the sprinkler systems watering lawns in the summer? Well, take that same idea and have the sprinklers lightly misting sidewalks and roadways with a brine solution. I know it will not work under a certain temperature but at least I will not have to get out and shovel. You could modify the sprinkler heads to run in series at a low pressure ( which the brine will not freeze) and when a sensor detects a snowfall, the pressure raises allowing the sprinkler heads to activate.
Reward: 4 goody gum-drops and one of these systems.