The best bean in the world is even better than you thought.
The abrasive texture of coffee grounds will help strip oils and buildup from your hair. Pile them on in the shower or, for a much less messy strategy, just add some grounds to your shampoo or conditioner. (Best for brunettes as coffee can also darken hair.)
Coffee grounds make great gravel to help keep roads and sidewalks from being slippery, and the acid helps melt the ice quicker.
Most coffee shops (including most Starbucks) will give you bags of used grounds for free!