Thank you for your replies.
@Icyseeker. I look forward to hearing what you think of them.
@RowRowRowYourBoat. Originally, I cut off the padding from an old pair of headphones and glued them onto a sleep mask I acquired when I flew to Florida. They worked fine, but eventually I needed to invest in something better.
Personally, I have found the Manta Sleep Mask ideal because it's adjustable. It cuts off the light perfectly for me. You're absolutely correct about seeing no light being key to the experience. I guess it's just a matter of finding a mask that accomplishes this, while accommodating the shape of your face.
Apart from this, it has led me to wonder if a lack of light is key to astral travelling. As well, how our eyes can also become projectors. They don't just take in what they see from the outside in, but are capable of seeing from the inside out.
As the Kybalion states in the second Law of Correspondence; as above, so below. I find that particularly poignant.
Peace and love.
DD.
โGive a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life.โ -R.I.P. Terry Pratchett
GARGA BLARG BLARG!
Dharma Mantra Tantra