One tragic mistake (I think) in the modern Western world is to reduce the notion of religion to beliefs or doctrines. And perhaps morals.
Ritual is actually more central to religion, in a wider historical and geographical perspective, than any of the above. It is an ambiguous act, gesture, susceptible of several interpretations, which refreshingly breaks for a while the endless flow of talk in religion. I like that.
Traditional Christianity brought us basically two rituals, or sacraments: Baptism and the Eucharist. Those were interpreted differently in early Christian writings, yet the act itself was capable of uniting people regardless of their interpretations. And the early Christian writings attest to a number of possible other rituals which were forgotten except in some fringe circles or situations, e.g. the washing of feet, laying on of hands, "holy kiss," anointing, or the Gnostic erotico-mystical ceremony of the "bridal chamber" (the content of which is debated).
Rituals, like symbols or metaphors, tend to wear out in time. They must be refreshed through reinterpretation, or renewed through syncretism (borrowing from other religions) or invention.
Let the crazy among us (you know who you are) play creating rituals. I thought of two possible ones lately:
(1) A mirror ritual: facing a mirror until you really "see yourself" (more difficult as it may seem). Then shout and smash the mirror (a bit costly but it may get sponsored by the mirror industry should it become popular). Then keep silent for a while or start the Hindu-Buddhist "om" (getting syncretistic here).
(2) A greeting ritual: instead of shaking hands or hugging, gently put your hand on the cheek of the next person and look him/her long enough to really "see" each other. (I sometimes daydream of doing that to people in the street, but I'm not yet crazy enough.)
Can you think of others?
Of course if you are not that crazy you're welcome to discuss, or perhaps tell about extant foreign rituals (religious or not) that you have seen and enjoyed...