With the school holidays almost upon us, you might wonder how on earth you’re going to keep your kids busy for six weeks. You will undoubtedly hear the words ‘I’m bored’ in the near future. A great thing to do is to form your own rock band – not an ordinary one with ready-made musical instruments – you can go one better: form a band by using stones, small tins and holders. Literally: a ‘rock’ band.