Wireless Presenter Pen for $5.4 (free shipping)
Whenever you do your presentation, you may find yourself going back and forth between your PC and the giant screen. This will no longer be required when using the Wireless Presenter Pen. It frees you from having to rely on an assistance to help you move around the slide. With this laser pointer, you can concentrate on just presenting your work and nothing else. It only cost $5.4 on All Cheap Price and ships for free. This laser pointer works within 15 meters of range. So far as you have a USB port on your computer, it should work fine. For this price there should not be any reason why you don't order it. It is cheap enough for that.