Wendy’s is bringing back its popular Frosty Key Tag for 2026, letting fans score a free Jr. Frosty every day with any purchase through December 31st. The $3 key tag is available for a limited time at participating locations in the U.S. and Canada, online, or through the Wendy’s app, though supplies are expected to last only until early April. Along with unlimited small Frosty treats, including current flavors like Thin Mint and classic chocolate, buyers are also supporting a good cause. About 90% of proceeds go to the Dave Thomas Foundation for Adoption, which helps find permanent homes for children in foster care.