DXM (dextromethorphan)
benzos - you can get diazepam (Valium), alprazolam (Xanax), clonazepam (Klonopin)
nicotine - don't have to smoke. I put some lidocaine in my mouth and crushed the lozenges, gum (this is because it's basic and extremely nasty/irritating when nicotine comes in contact with your throat). Gives a good rush. Also can use patches
amphetamines - adhd medicine, ephedrine, crystal meth (never tried any except pseudoephedrine)
cocaine - short high but apparently worth it (again never tried cause don't have the cash)
psychedelics - lsd, magic mushrooms, 25nbome
opiates - codeine, hydrocodone (Vicodin), oxycodone (Oxycontin), hydromorphone (Dilaudid), diamorphine (regular heroin), fentanyl