Social media and local paper. Use social media and read your local paper. Post on your Facebook wall that you're looking for a sensational seasonal opportunity and ask your friends and followers for suggestions in your area.
Also you can bet that when there's significant hiring in your area, the local paper covers it. The business pages can offer a wealth of information on how employers are performing and who's staffing up for spring. The time to do it is now. Get your foot in the door first.