I managed to get some 15 years ago and I loved how easy it was: googled for a smart shop, bought a kit online with my credit card, a few days later received a plastic box with some dirt from the Netherlands. You had to wrap it in a clear plastic bag, and spray it with water once a day.
After a week, I had 30 cm tall Psilocybe Mexicana mushrooms. Dry them, brew them with some green tea, commune with the Gods.
I miss them so much. Probably my favourite hallucinogen, with a deep affinity for nature. Trees on magic mushrooms have another physical dimensions. It's like seeing them in 4D and they're magnificent. That, and the deep belly laughs that last for seemingly hours.