Including pharms that are uncontrolled in my current country of residence, and legal to import for personal use without a script, though prescription-only domestically (one of those loopholes).
1) 50gs of ground San pedro (legal to buy but not consume). Every bit as mindblowing as high-dose LSD experiences, and more physically euphoric. Most spiritual and positive psychedelic experience I've ever had, though choking it down took a while.
2) When it was available, 250x kratom extract powder. Had no opiate tolerance to speak of at the time, and half a gram was as euphoric as 100mgs or so of CWE'd hydrocodone, but longer-lasting with potentiators. To be honest, I think it may well have been spiked with some RC or obscure opiod. Some batches were just too potent to be legal, comparable in strength to Oxy, but more gentle, like extracted Lortabs or high-dose dhc with downs.
3) Legally purchased OTC codeine and DHC for purposes of extraction,or hard-to-find but OTC pure codeine linctus (600 mgs a bottle, when they'll sell it to you) potentiated with promethazine. Chemists are reluctant to sell it (cover stories involving imaginary grandparents with painful coughs can help), but when they do, it always feels like a triumph: dirt cheap, pure, but pretty useless once you've tried the stronger opiates. Just can't get high on codeine no more, but priceless when jonesing without other options.
5) AMT in moderate doses - overdid it one time, owing to impatience on the come-up, and ended up eating a whole pack of Depas Etizolam when the fluttering OEV's and body load became overwhelming.
6) Poppy pod putty - not exactly legal, but the makings are.
7) When it was legal, methylone. Closer to MDMA - or perhaps MDEA - than any other substance I've tried, fantastic aphrodisiac.
8) Mephedrone - the first few times. Then it got dirty. The mysterious 'Neos' were my favourite, rather than pure powder, and they came mixed with all kinds of crazy shit (methamthetamine or something like it, various flouro amphetamines). Neo-Doves and Spirits...those were the days. Until people started fiending and it transpired that the stuff was probably neurotoxic and as addictive as meth.
9) DXM - only taken middling doses, but prefer it to MXE. Also useful in small doses as an opiod potentiator.
10) The now-illegal JWH series: never mastered chasing the dragon, so I used to roll ludicrous overdoses into joints, which made for some frightening/funny experiences. The better-manufactured JWH incense blends were also the best weed substitute I've ever come across.
11) MPA - purely as a functional stimulant, low doses.
12) Modafinil (sometimes mixed with low-dose MPA).
13) Ethylphenidate, again as a functional stimulant.
14) Salvia, for a quick trip to the other side.
15) 4-FA, now banned: kinda somewhere between low-dose speed and a threshold dose of MDxx.
16) 5-APB in a branded pill, mixed with MPA. Not a great high, but pleasant, and a free gift from the guys at the local headshop. As were the three 1mg etizolam tabs that took the edge off. Tells you how much money they've made from me...
17) Plain Bali kratom leaf...would be much higher up the list if it didn't require such lengthy preperation with a capsule-making gizmo, and 25gram doses.
18) Full spectrum Kratom alkaloid tincture, a few years back, before the extract market went to shit. It never felt like full-on kratom, losing some of the subtle joys of plain leaf, but it was strong, if hard to keep under one's tongue for 15 minutes.
19) Etizolam on its own, or with a little weed/synth 'noid blend.
21) The AM-series incense blends: very short-acting, but intense as any hydroponic skunk for the first 15 minutes or so. Tolerance builds extremely fast, though, amd it's hard not to keep chasing an ever-diminishing high.
20) Alcohol, especially with good food and company. Beer for burgers and tacos, wine for more lavish and sophisticated spreads,
21) Zopiclone for benzo withdrawal and trip-abortion.
22) 4-MEO-PCP. But I tried my one sample while on MXE, realised I was entering mindless drug-hoover mode, and had to flush most of the bag to prevent myself from doing it all, so I never really got to savour it fully. Definitely brought me close to holing, and took away the darkness of MXE.
23) MXE (low dose, my least favourite dissociative).
24) Seroquel for bad nights.
25) Pregabalin or gabapentin, either low dose to alleviate benzo withdrawal, or high dose to become an incoherent stumbling mess, prone to dropping pizzas and a hard drive that had hundreds of hours of movies, music and all six series of 'The Shield', my all-time favourite crime drama on it...sniff.
26) Diphenhydramine in moderate (100 mg) doses: now and then, pleasantly relaxing, like a baby cousin of quetiapine.
Kind of a long list, apologies, I'm on morphine and diaz and gabapentin, in the speedy/chatty phase before the nod kicks in. Still hoping to try Yage some time, and Coca tea if I ever make it back to South America. Oh, damn, Nitrous should be up there - some of the most intense, though short-lived, trips of my life came from nitrous balloons on MDxx and Meph comedowns: and coming up on acid in the lots outside Grateful Dead shows in the 90s, a balloon had me hallucinating Wintston Churchill handing me a pipe. The pipe was real - Churchill was in fact a Spanish Deadhead. Imagine my surprise when the pipe turned out to contain a blend of Iso Hash and opium...that was one hell of a way to kick off a trip. I'd been burned at DC shows, sold inactive 'shrooms and a quarter sheet of blotter sans LSD, but it was a different story in Oakland...people were so impressed that I'd come all the way from London to catch Jerry's penultimate tour that they kept giving me joints and hits and even a capsule of MDA. One of the best nights of my youth, though it made the club/free party scene back home seem tame and predictable. (They played 'Lucy in the Sky with Diamonds' just as I was peaking on the 'cid.
Okay, I WILL shut up now.