Connect with your local Project Linus chapter or other charity quilt group and either donate the fabric, make tops, or make quilts. Some groups don't particularly want seasonal quilts, but many do. Our Linus chapter does a special set of Halloween and autumn quilts for the pediatric floor of the hospital for their Halloween party. Unless the group has storage capability, they won't want completed seasonal quilts a month after that holiday. Kids enjoy the holidays.
You can even make year round calendar/seasonal quilts for kids with fabrics from many of the seasons all together.