if you know a little bit of organic chemistry you can extract the mescaline from the cacti, which would then be more powerful, or you can just try to buy mescaline from somebody. other lsd-like experiences are morning glory seeds (i've heard, i haven't done them myself yet), but with those you have to be careful how to prepare them or you'll get sick (there's info about it on erowid). i guess some of the 2c research chems are similar to acid as well but i can't say for sure cause i haven't done those either. i'm in a similar position because there's no acid around here either so i'm gonna try morning glories sometime soon. good luck!