Bring them to a recycling center or drop them off in your local grocery store, which more and more are recycling plastic bags and promoting cloth grocery bags.
Recycling one plastic bag could save 43/10,000 gallons of oil, 591 BTUs of energy, 591/49,000 pounds of plastic, enough oil to run the average car for 129/2,000 miles or circle the globe almost 602/125 times, a 129 cubic meter lake from being polluted, over 21,867/3,400,000,000 tons of CO2 a year, enough energy to power a 591/3,400,000 bedroom house for an entire year, over 371,739/340,000,000,000 cars for a year, 129/40 pounds of green house gases, 43/2,500 acres of soil from being polluted, 11/500 pounds of fossil fuels
(591/49,000 pounds of plastic could save 1,773/6,125 gallons of H2O, 21,867/490,000,000 cubic yards of landfill space almost 591/49,000 pounds of black gold, 1,706,217/49,000,000 kWh of energy, 80,967/19,600,000 gallons of oil, 591/612,500 gallons of petroleum, enough energy to heat over 12,411/1,960,000,000 homes, (591-1,182)/98,000 gallons of gasoline, enough oil to run the average car for 242,901/3,920,000 miles, or circle the globe almost 80,967/17,500 times)
Recycling one ton of plastic bags could save the energy equivalent of 11 barrels (462 gallons) of oil, enough oil to run the average car for 6,930 miles or circle the globe almost 517,440 times, a 13,860,000 cubic meter lake from being polluted, 693/4 tons of green house gases, 1,848 acres of soil from being polluted, almost $70,166.25