In the hands of an artist, hammers can be used to hang pictures, forge ice sculptures, or chisel love sonnets into freshly laid drywall. Stock up on handy and stylistic tools with today's Groupon: for $10, you get $20 worth of hardware and home goods at Goodman Building Supply in Mill Valley.

The customer-service-focused staff at Goodman Building Supply, founded in 1955, arms to-do listers with hardware from an inventory of more than 60,000 items. Collect scraps from an upstart paper airline in a trash bin ($12.99+) or replace a bathroom elephant with a gleaming showerhead ($9.99+). The Certified Green Hardware store bathes Marin County in metaphorically verdant hues with its selection of more than 2,500 green products, including water-saving toilets and smart faucets.