When I was a kid I had a lot of mice. Some of them were pets but most of them were indicative of childhood entrepreneurial spirit. My friend John Ludowici had pet snakes and so I figured I could breed the mice I had and sell him to him at 20c each ‘? less than they were in the pet shops. It was a pretty good earner for a while and at one point I had close to 200 mice in breeding cages. I used to catch the train to school and carry my mice...