He turned more and more to designing and supervising the building of what he called his "things"always with silly names such as "The Featherstone-Kite Openwork Basketweave Mark Two Gentleman’s Flying Machine", two copies of which exist, one of which was displayed in a glass case in the Merrion Centre, Leeds, the other on permanent display at the Mid-America Science Museum in Hot Springs, Arkansas. In the mid-1960s he was commissioned by Honeywell to create a mechanical computer, which he named "The Forget-Me-Not Computer". In 1968 he designed the elaborate inventions of Caractacus Potts (played by Dick Van Dyke) for the film "Chitty Chitty Bang Bang".