Cheap 'n' Quik

​You work for Cheap 'n' Quik, a repair company who's promise is the ability to repair sent in items within only 20 seconds! As an employee, you're expected to keep up this standard. Fix items as they are passed to you within the time limit. Try to repair as many items as possible before the whistle blows to indicate the end of the day. The day will start after you manage to indicate the ability to repair by changing a light bulb.