Boston.com has a very cool chart detailing how to mess with your mind's perceptions, naturally. I think the most interesting one is definitely the first one. It tells you how to hallucinate with ping pong balls and a radio. If you'll excuse me, I need to go cut some ping pong balls in half and listen to static for the next hour or so.
Link
Can you picture it?
Everyone lying on the floor,
with ping pongs taped to their eyes,
listening to static radio.
Its like a scene from the Twilight Zone.
Instead of any of these, you could use that to enter a lucid dream and be a god for a night! You could do whatever you want!
--TwoDragons
staying up late or not sleeping for a day or two is basically free pot.
Increasing the pressure on the eyeball produces more dramatic phosphenes. One procedure is to apply the index fingers at the inner edge of the eyeballs and press in and toward the temples. The visual field lights up and then, as pressure is maintained for a few seconds, a scintillating design appears - a kind of checkerboard or shifting field of glowing dots, sometimes with elaborate substructures arrayed around a luminous centre. When the pressure is released, the checkerboard fades away, sometimes leaving the central luminosity. If the pressure is then renewed, a pattern of bright, irregular lines appears that resembles a system of blood vessels. When the pressure is again released, a fine filigree image appears and remains for some time. The checkerboard design is probably some manifestation of the orderliness of the neural network of the retina; it shifts in the visual field as the gaze is shifted. The filigree, on the other hand, may be generated farther along the visual pathway, since it remains stationary regardless of where one looks. However, there is a degree of individual sensitivity; some people can make phosphenes occur regularly with little provocation and after-images which last a long time, others cannot (Oster 1970:83-4; Brindley 1963).
"
"Wanna see fireworks....!?
...press your eyeballs real hard!"
http://cgi.ebay.com/Day-Dreamer-aka-Purple-trip-toy-day-tripper_W0QQitemZ5589134170QQcmdZViewItem
just read the description on how it works. I have one, and when I use it in the sunshine it looks really neat. flashing colors and shapes everywhere.
@ DylanDoom, I literally LOLed at visualizing that.