If you're looking to recycle your old Christmas tree lights, you can try contacting your local recycling center or waste management service to see if they accept holiday lights. Some companies may even offer special Christmas tree light recycling programs during the holiday season. If you're looking for a more environmentally friendly option, you could also consider donating your old lights to a local charity or organization that may be able to repurpose them for future use. No matter what you decide, make sure to safely dispose of any damaged or broken lights as they can contain hazardous materials that should not be thrown away with normal trash.