One good memory from tripping a lot back in the 90s was peaking in the back seat of a friend's car while staring at a gas pump. It was as if the entirety of universe has been nearly laid out on the kitchen table in clean, easy to understand fashion, all mine for the taking. It was quite an experience, not entirely dissimilar from what I've read about nirvana or samsara. I laughed at the simple perfection of that gas pump until I cried. Never been quite the same since...