I haven't developed any in-depth sort of rituals except for maybe  this one.

I know it isn't really a ritual (a "novel" one at best) but I am still working on it and it really does help clear my head and cleanse my being.  I like using music and incense during a journey as well as doing stretches with my significant other. IME, sex can be very rewarding too.

While these things are not ritualistic by themselves, they have a tendency to occur in nearly every one of my journeys, therefore creating a ritualistic effect.

I think it is about finding your center and being open to and trying out as many methods as possible. Through trial and error, your own rituals and rites will become apparent. Do what is comfortable for you!