Holiday lights can be mailed away for recycling. Check these websites or search for others:
Check with your local hardware stores for take back programs. Big box stores like Home Depot, WalMart and Lowes may offer takeback programs in your area during or before the holidays. Check with the individual stores first.
Old string lights are accepted as scrap metal at the Johnson, Morrisville, Stowe and Worcester Drop-Off Locations. Fees may apply.