Alongside his work as an artist, Ivan has been active as an inventor of games, puzzles, toys, educational aids and programmes which have been commercial successes under major manufacturers such as Hasbro, Pressman, Mattel, Peter Pan, Spears, Ravensburger, Childcraft, Invicta and many others.
childcraft | Childcraft |
It possesses reference materials and sources such as encyclopaedias, childcraft, dictionaries, domestic and international children's research documents, newspapers, and a collection of child play-related materials, i.e. Audio & Video Compact Disc and Tapes .