If you have a yard, you can make use of it all year. Take your tree to a chipper and have it turned into mulch. Spread the mulch around your yard. It will help protect your soil from erosion, and the earthworms in your garden will love it. Some communities offer free chipping and free bags of mulch.
For more tree recycling information in your area, do a quick search on Earth911 (enter "Christmas trees" and your ZIP code).