Probably any WalMart west of the Mississippi and north of Texas would have brushes and scrapers. Auto parts stores as well.
My favorite material for winter is deicing spray. The stores sell aerosol cans of deicer which turns an ice coating into slush for easy removal (window squeegee).
The cheapskate approach is to use winter formula windshield washer fluid in a pump spray bottle. Brush the snow off, spray the fluid on the ice layer, wait a few moments then the ice will soften and can be removed easily. Works well to unstick wiper blades from ice - safer for the rubber than just pulling on them.