In the Gnostic tradition, we study all religions and philosophies, and embrace all genuine symbols of divinity. As such, Gnostic altars—while humble and simple—also display the marvelous panorama of images and symbols used by divinity to lead us towards the light.
Every person is free to develop an altar that suits their temperament, religious idiosyncrasy, and budget. Amongst students and instructors there is as great a diversity of altars as there are individuals. Nevertheless, there are certain basic elements that should be present in order to truly magnetize one's environment.
"The devotee must purify the bedroom daily with the smoke of special aromatic substances... A good incense attracts the great masters whom we need for our work."" —Samael Aun Weor, The Perfect Matrimony
From these basics, you can expand in order to inspire yourself:
"The devotee must bathe himself daily, to assure cleanliness. The room must be clean at all times. The room must always contain freshly cut flowers. Flowers, perfumes, symbolic pictures, and beautiful music contribute to creating an environment filled with wisdom and love." - Samael Aun Weor, The Yellow Book