And what in more detail happens on an omnilol trip?

All of the direct descriptions are either reviews of specific variants or directed at children.  But, collected from those: it takes a few minutes to set in and then you start to astral project, which can happen more abruptly or smoothly depending on what exactly you're on.  This manifests as a sensation of leaving your body, though you remain in (somewhat more clumsy than usual) control of it; it's advisable to remain seated or lying down for the duration of your first few times.  It doesn't get rid of sensory input from your body, though the input may change in some way; some people find their senses feel softer or more distant while others say they're about the same as normal and it's just comparatively harder to pay attention to them.

Once you're proprioceptively up in the sky (which is only proprioception; you can't use omnilol to spy on your surrounding landscape), you'll begin to feel the presence of the stars and the other currently-high people.  Aiming for specific people or clouds usually works, at least when they want to be found, and children are advised to aim away from the One unless they're like, terminally ill and nervous about what death is going to be like or something.

From there, you can telepathy people on a scale of exclusively intentionally-sent words and tone to full-on mind-meld, depending on dose and variant.

And eventually it wears off, the telepathy becomes more difficult and lower fidelity, and you sink back into your body.  Some people are immediately fine to go do other things once that happens; others get drowsy or have lingering sensory or emotional effects for a while afterwards.

The next time Cricket wakes up Cam has made himself a gummy of a variety that just does intentionally-sent words, though he doesn't know if it will work; Cricket is advised in tripsitting protocol and Cam takes his dose. It's probably too magic but Cam would expect his crystals and his homeopathy to work, since that seems to be not about the physical structures at work at all, so maybe it'll do what it says.

He remains sober.

Damn. It's pretty late at night, but is there a 24-hour (...or, uh, whatever) drugstore he can hit up?

If he wants to drive half an hour to a bigger town than Chelford.

Yeah, all right. He gives Cricket a phone and hops back aboard his motorcycle to the nearest place that appears to have his chosen strain in stock.

Here it is!  This one's a liquid; it comes with a little plastic measuring cup.  Blueberry flavor.

Blueberry flavor it is. He can cover it with his change from the shelter without having to awkwardly give the cashier a spiel and a stack of videos.

He brings it back to his RV and reminds Cricket about tripsitting protocols and measures carefully and slurps.

And a few minutes later it sure does feel like he's rising out of his body, even though he also is still very much just sitting in his chair.  It's soft.  He can still see the inside of his RV in just as much clarity as before, although it seems markedly less real and present and important than up, up, up . . .

Consciousnesses other than his own twinkle into his awareness.  Who is he looking for?

Cats. Or anybody else who isn't human, actually, but he'll take cats.

Does he mean star clouds made up of lots and lots of former individuals?  Those aren't really very human anymore.  There's some here and over there and there and over that way.

No he means ones that were not previously human.

Your search - 'ones that were not previously human' - did not match any available spirits.  Did you mean: really big star clouds?

(Cam can feel the presence of said really big star clouds.  They're enormous, collections of thousands or millions or in one case tens of billions of souls, all collapsed into a single entity, and complete with all the intelligence and wants and dreams and hopes and hates which that entails.)

Okay, maybe Starclan is a different thing somehow. There are seriously no ex-cats here? Really? He will take whoever died most recently in that case.

It's this person over here!  No, now it's this o - over h - that one - now it - here's - this -

...he will take the nearest non-cloud person.

That one doesn't want to talk to him.  Here's the second closest?

Sure.

hi there??

Hi! Can you tell me what it's like to be a star?

I guess it's like what you're doing, only you can't go back
kinda scarier
but also more peaceful
I guess the scary part will go away when I'm more used to it

Are you hoping to stay separate or are you going to merge soon?

probably gonna wait a few more days
give everyone a chance to come say goodbye and stuff
uh sorry if we like went to high school together or something but I super don't know who you are, should I or are you just a rando

Definitely a rando, I was just trying to find somebody who was separate. I'll back off if someone you actually know comes by.