There are some Native American ceremonies I could talk about at some point. Maybe PM me (private message) on that.

I feel that the main value in rituals is that they help to strongly focus attention and emotion on matters of concern. They provide a useful structure to work with. All rituals are made valid by valid and sincere intention.

The danger with rituals is that people sometimes end up turning the ritual itself into an idol, instead of simply using it as a tool. If so, they also tend to deny the rituals of other traditions, and that is quite a wrongful thing to do.