Did you know you can stimulate yourself to have a lucid dream? Well, it may take a little bit of practice first, but this sleep mask can certainly help you have the most interesting and realistic dreams of your life (yes, kinda like "Inception.") Just check out this video to learn how to make a super cheap lucid dream mask out of two LED lights and a pair of goggles.
FYI: A lucid dream is a dream is essentially a dream that you wake up in. While you're dreaming, you realize that you're dreaming and this self awareness lets you control the events of the dream to a certain extent.