Slumberkins, makers of tools for early emotional learning, has secured $2.8 million in its Series Seed raise. Led by SeaChange Fund and Listen, the raise allows Slumberkins to continue building its franchise from the ground up and expand its reach into children’s entertainment and content. Several new channels for delivering those tools are in development, including a preschool tv series in partnership with The Jim Henson Company. Slumberkins has signed with the Jim Henson Company to co-produce a television show to bring the company’s signature characters to life.