Show Dad he's loved with this charming box set of 25 greeting cards , complete with envelopes . Each card features sweet watercolor illustrations depicting dad and baby animal pairs from Elena Ulyeva's beloved books, The Best Daddy in the World and The Best Grandpa in the World . The interiors are blank, providing space for children to personalize with their own notes , drawings , or dedications for special occasions like Father's Day , Dad's birthday , or just because. This set encourages kids to practice writing and fine motor skills . Packaged in a durable box , it's perfect for storage and reuse .