Just because it's winter doesn't mean you shouldn't market your camp. You should market year-round. The Holidays are a perfect time to generate a few extra bucks you might not otherwise get. Selling gift cards or gift certificates is one thought. Having a camp reunion ice skating or ski day -- and charging for it -- is another. Whatever you do, you'll want to announce your money-making activities via email. Check out these 20 great subject lines for the Holidays from the Vertical Response email marketing blog. You can easily adopt many of these to your camp's email marketing program.