A time machine on the cheap? Easy! I have been using one regularly actually, and I have made them for almost next to nothing. Of course, given the materials will ultimately determine the effectiveness of the device. It is simple, first you need a flat surface, a floor perhapse, and something that you can support your head with, like a pillow. Now, with the floor and pillow, lay on the floor, preferably in an area with low lighting, and rest your head on the pillow. Make sure to clear your mind and close your eyes, and after about 20-30 minutes, you should be able to activate the device. Of course, I have only had success in traveling forward in time, but I can usually go around 7-9 hours in the future. Once the 20-30 minutes are up, open your eyes and check a clock for results.