Six things you can do with coffee – after you’ve finished drinking it

Many of us depend on coffee to fuel our early morning meetings, mid-afternoon slumps or all-night study sessions. These days, the words “coffee” and “fuel” are half-jokingly synonymous. More than 9m tonnes of the bean are produced annually around the world and, once we brew it, an awful lot of waste is created. The vast majority ends up in landfill.