Step 5) Earplugs even though your ears will be below the water, all the better to cancel out any other noise. $2
Step 2) Epsom Salt 50 lb bag. Gotta stay afloat while meditating. Taking a guess at 400 lbs for the size of the pool, so 8 bags. $200
OBE Out Of Body Experiences & Astral Travel Made Easy
In this excellent magic meditation by StarFields, you learn how to get out of the body in order to have out of body experiences. Learn how to do out of body travel in your own time, at your own speed, for less than 20 dollars.