dissociatives
alcohol
DXM
3-MeO-PCP
the Diviner's Mint aka salvia

smoked/chewed leaves and extracts up to I think x15 or x20
smoked fly agaric extract
nos
ergolines
LSD
LSA-containing woodrose (HBWR)
phenetylamines
MDMA
6-APB
6-APDB
DOC
DOI
2C-D
2C-B
2C-C-NBOMe
2C-I-NBOMe
2C-I-NBOH
3C-P
"LSZ" blotter
tryptamines
psylocin mushrooms
ayahuasca (didn't trip much though... ended fast in a puke)
5-MeO-MIPT
4-HO-MIPT
4-HO-MET
4-AcO-DMT
beta-ketones
mephedrone
metaphedrone (3-MMC)
pentedrone
dimethylmethcathinone
various stimulants
pseudoephedrine
speed
caffeine (in pure form up to 1g; also normal mundane beverages- coffee, tea/chai, mate)
nicotine (cigs, cigars, filter cigars, snuff tobacco, dip, snus, pipe, sheesha, bong, etc., did it all)
other
pot, hashish
a few synth-noid fueled blends when they were popular (Spice, Taifun, etc.)
codeine
ginseng
silene capensis dream root