What to buy a DJ? 10 gift ideas they'll actually use

Is there a DJ at home who mixes in their room in the evenings or plays events at weekends? We've picked 10 gift ideas that will help them when playing, on the road and in making a party look like a club. From cheap little things like a memory card or spare cables, through lights and a fog machine, all the way to DJ headphones and a controller, for each tip we explain why a DJ will find it useful.