Meditation on certain objects may function:

1. to induce an alternative state of consciousness or
2. to bring access to certain areas of the sub-conscious and astral plane.

Among the first are fascination devices that focus awareness and induce trance—crystal balls, magick mirrors, swinging pendulums, pools of ink, etc.—allowing the user to receive impressions. Among the second are Tarot Cards, Rune Symbols, I Ching Hexagrams, Egyptian Hieroglyphs, Hebrew Letters, Tattwas, and Yantras etc. Used in meditation they may open certain astral circuits and gain access to specific parts of the Astral Plane and to subjective states of consciousness.

Suggested Reading – Tyson: Soul Flight, Astral Projection & the Magical Universe