There are these simple things in life that can make you go into a really significant state of deep trance.
I wanted to list them so I can put them together and create the ultimate Mind Alteration-ritual if you will.
And I don't mean altered states obtained via the use of Substances. I can OFF COURSE think of plenty of things like Coffee, Mushrooms and Marijuana to add up to these techniques myself. I need activities you can do as described in the List below.

I'll do what I do best: Making a list. This gives most oversight.

"MINDFUCKS"
* Chant/Sing the same short Melody OVER AND OVER again. Anything will do but the Catchier the Melody the stronger the effect. Especially the SHORTER and SIMPLER the melody you loop is, the more effective this will work. Don't you stop and soon enough you will find yourself enchanted and entranced by your own Repeatative chant. 4 Real; Try it.
*GAZING into nothing. Staring. I call it Watching without seeing. Just let your eyes go out of focus, relax and breathe slowly. After a short while you'll feel significantly tranced out.
*Watch Fightclub OVER and OVER again for one week straight as often as you can. Don't get bored; You're not watching it for amusement, but for entrancement. And this works pretty well.
*Drums/Percusxsion. If you have any percussion instruments (Tabla, Darbouka, Bongos, Djembé..etc) Drum a Repeatative rythm and just never stop. Eventually you will fall into a rythmic trance much like the Chant-trance.
*Sensory overload: Put on your Radio, TV, Computer MP3player, CD player..etc and sit in the middle of the Kakophonia of light and sound for a period of time.
*Sensory Deprivation: Sit in complete silent darkness in a room that is as close to skin temperature as you can get it. This is said to induce auditory&visual Hallucinations of a Dream-like nature.
*Staring at a dancing Flame
*Staring at a Plasma ball.
*Staring at trees moving in the wind.
*Watching smoke: Incense, Cigarettes/Joints.
*Listening to Crashing waves
*Listening to a raging storm or howling winds
*Listening to a waterfall or a gentle beak streaming
*Listening to heavy rainfall
*Listening to intense ThunderStorms while watching awesome lightening
*Watching heavy snowfall looking up into the sky from where it comes.
*Gazing into the Sky with nothing BUT the sky in your field of vision.
*Gazing into a wide expanse of space: grassy plains, farmlands, dessert...etc
*Sitting on a constantly rotating disk
*Wearing Earplugs that block out sound really good: I find the absolute silence brings me complete isolation and serenity
*Bathing for a long time in a semi-hot bath (You'll probably come out all limb and like a raisin)
*Sitting in warm steamy room; I often turn on the hot water in the shower for this.
*Water in general; Lots of it to float around in carelessly.
*An amazing panoramic view from a high tower or mountain peak.[/b]
Okay the list is far from over. If any of you know such methods to significantly alter your state of Mind then let me know and I'll add it up to the List. Be creative