I like Shikantaza, although I can't claim to actually do it daily. It translates to "just sitting" and is a form of meditation consisting of, well, just that. It is mostly based on a single text telling you how to sit and how to balance not-falling-asleep and not-actively-thinking. That's all. There is no extensive literature translated to death and no startup trying to sell you something, but yet you are right there with the core weirdness of meditation and paradoxes like thinking non-thinking. Love it.