Anyone who owns a cat knows they are not like the cat-food adverts portray. They are, in fact, furry little gits who enjoy nothing more than destroying your possessions. As a matter of fact, only yesterday did one of my litter-kickers decide to wake me by knocking over an entire pint glass of squash on my bedside table, sending an orange tsunami over my books and phone. Designer Esther van der Wurff also owns hairy little devils, which led her to design the Cat’s Trapeze when her kittens refused to stop using her curtains as a climbing frame.