I’ve come up with my fair share of crazy moneymaking schemes in my time. When I was eight years old, I even became a tiny entrepreneur, buying bouncy balls for 10p each at my local newsagents and selling them for a quid in the playground. It remains my most profitable venture by far, and I still resent the fact that my dad stopped me doing it (because I was ‘exploiting the other children’s ignorance’, apparently. At 1000% profit, who wouldn’t?).