Home Depot has an offer to trade in Christmas Lights for $3 per strand for credit toward New LED lights. Valid Nov 5 -15, 2009.

The LED lights retail for $5.97, after the trade-in, they will be $2.97 per strand. You can trade in up to 5 sets per customer.

NOTE: They will even take broken strands for the $3 credit.

LED lights use 80% less energy.