What is it with cats and instrument cases? Was feline ever born who could resist nesting in a banjo case?

Our enormous tomcat, Bill, is currently overflowing the sides of my tenor banjo case although his own special cushion is less than 18 inches away. From the moment I headed to the kitchen for a spot of practising, I doubt it took him more than 30 seconds to arouse from snoring oblivion, spot the open case, and insert his very considerable bulk therein.

Fortunately, it's such a tight fit that he can't deploy his claws to indulge in his second-favourite activity: a thorough kneading and shredding of his slumber surface.