Christians often meditate - although we may not label what they are doing as specific Christian meditation. Contemplation of the images of Christ or the Virgin, telling the rosary, reciting Hail Marys, simply sitting in a church can all lead to a meditative clearing of the mind.

The same is true of the other monotheistic religions. The Muslim daily prayers are an exercise in cleansing the mind and focusing on God. Adherents of the Muslim mystical sect of Sufis practice various forms of meditation, including, most famously, whirling, as well as guided meditation and visualizations, such as the inner pilgrimage to Mecca.

Part of the Jewish mystical tradition of Kabbalah includes meditating on the tree of life, a visual representation of the path to spiritual enlightenment. The emphasis on language and the actual sound of the Hebrew syllables has interesting parallels with Hindu practice and the use of Sanskrit mantras.

You may want to investigate your own cultural heritage to find aids for your practice. Looking at a rose window may be more meaningful to you than contemplating a Tibetan thangka. You should not feel alienated by any prop you choose for meditation. Whether you have particular religious beliefs, or none, your meditation should not conflict with them.