My earliest exposure to shamanism was through pop-culture. Back when I was a young warthog, I enjoyed watching the cartoon series Bravestarr where the hero summons the powers of animals in an intergalactic wild west.
In these more recent times, I'm using the shamanic approach to my chaos magic practice. I've had success with divining stones as prescribed by Nick Hall in Chaos and Sorcery. It's the closest I could get to the divining stone traditions of African tribal magic. More than ever, I've been invoking the spiritual essence of animals especially that of the crocodile when I need to get shit done. I'm beginning to believe that I, somewhat, had something to do with the summoning of the recently captured giant crocodile Lolong.
Even more recently was the use of shamanic rattles for invocation and banishing. I got a few ideas from Michael Harner's Way of The Shaman. Basically, I sing improvised songs while dancing and shaking two maracas. It makes a good exercise too. Instead of Taebo, why not Shamanic Cardio? Heck, I could do it to Shakira's Waka Waka
Another throwback to atavistic magick I do is the use of a wooden toy snake for healing. According to Nick Hall's Chaos and Sorcery, live snakes were used as wands for healing the afflicted. Although I'm sure it's a psychosomatic effect but I definitely feel better when I use the wooden snake. I just hope Samuel L. Jackson doesn't find out. He's not so fond of snakes.
So yeah... shamanism. I think it's cool. As for hallucinogenics, I don't think I'd be ingesting peyote. Besides, I'm like I'm high all the time. Herbalism? The only herbs I'd more likely to collect are the ones in KFC's original. Below is a reenactment of an actual shamanic experience caused by the ritualistic consumption of fried chicken.