277 LISTEN TO YOUR WISER SELF! "You can't make money in a teapot," will grow in value. This is the time to says your Wiser Self, "but you can turn out that bit of money you've got make money by putting your spare cash tucked away and put it where it will really into National Savings Certificates, where it do some good." Every 15/- Certificate earns you 5/6 in 10 years' time. BECAUSE This increase is not subject to Income Tax. They're easy to buy, easy to hold, easy to cash. Savings up keep prices down.