Seedling is a company that offers a wide range of engaging activities and projects for kids ages 3 through 12. While not a subscription service, I still thought they would be fun to check out. Seedling currently has over 350 products and are always adding new ones. Each kit is designed to encourage exploration and open-ended play. They believe that there is no “right” or “wrong” way to complete the project and that it’s all about enjoying the creative process.