How to make an empty ink cartridge work for you?

It is quiet common that we have to face some crucial situations in our life.It happens usually when we are face to face with a deadline . Imagine that you  are busy with some paper work for the next day meeting and while taking print suddenly the message pop up saying your printer cartridge need to be refilled and you have no cartridge in stock with you. Yup, you will be totally screwed up.But wait before you beat your printer to death. Just take out the cartridge shake it well and place it back,surely you could take some more prints without much problem.