Ah, back in the day I used to LOVE mixing. When I could get it, I would never do a psych without a bit of G and herb, although when I could get it I wouldn't do much of anything with out G.
One of the times that jumps out at me was at one of a series of parties out of town at a friend of a friend's property. It used to be a rabbit farm maybe 20 years ago, but they bought it just for the sake of getting out of the city's jurisdiction and throwing parties. It had a little forested area, an abandoned barn, grassland area and even some freaking dunes! All surrounded by ranchland, so occasionally we'd hang out with cows in the morning.
Anyway, at one of the parties (affectionately called Pharm parties, for the play on 'farm') the centrepiece was 22.5mg of 2-ct-7, one of my favourite psychs. But, since it takes so long to come up and down, I kept myself amused with some G, herb and K coming up, took a few hits of nitrous around the peak (not the best idea), then more G just off the peak, followed by railing some MDMA at around the mini-peak at T+9, more G, then some mysterious opioid (from a guy who was maybe 20 years older than the rest of us, who was mostly just known as 'The Dentist') to cap things off. The bad thing was that I was only middle of the road at that party: there was a group of hardcore tweakers that were buying up (and mixing) any downer they could find at around 9:00 in the morning to come down, and one nutter that purposely mixed DXM and MDMA to see what serotonin syndrome was like. He apparently spent the night crawling through the bushes looking for a place to die, being chased by 'serotonin ghosts'.
Once he showed up the next morning, while we're all still 3/4 fucked and sketchy and a bunch of us were acting like a sequencer making some 'phat beats' since the generator died, he was in rough shape but through the woods as it were. He told us his story before wandering off to get some water, and we then had a nice long chat about what we would have done if he had died and we had to get rid of the body. I think the consensus was that we would all get the fuck out of dodge as quickly as possible, and hope that the body was never found.
Needless to say, there were no pharm parties after that. But holy shit did it ever do off with a bang.