10 of the best instant gadget hacks

4. Mac OS X Lion iCal hots up
Apple's latest Mac OS has plenty of hidden tricks up its sleeve but who knew that iCal would get in on the action? You can type in normal phrases like 'cinema at 7pm on Friday' and it will translate them into events for your calendar. And click on 'year view' to see a heatmap of when you have the most appointments booked in.