Trunki is the British children's ride-on suitcase that was rejected by Dragon's Den investors in 2006.
The product was created by British designer Rob Law. Trunki combines a small wheeled suitcase with a seat that children can ride or be pulled on, giving it a distinctive design within the children's travel market.
Law presented the product on Dragon's Den but did not secure an investment deal. Despite that televised rejection, Trunki went on to become a commercially successful product and won design recognition, making it a frequently cited example of a business that prospered without backing from the show.
The product is sometimes described simply as a toy or scooter, but its defining category is a ride-on suitcase. That distinction makes Trunki the specific answer.