There are plenty of ways to go into trance that don't involve either hallucinogens or technological devices.
Perhaps if TPTB actually researched mystic traditions, they would have learned that...
Vulcan meditation being one, in Star Trek. The thing is, I'm pretty sure, that Chakotay teaching spirit animals to Janeway and Torres etc. was planned to be a major part of the character, until they got scared off. His doohickey was primarily for the nonspiritual types. Whether or not you like the sf version of a mechanical door to spirituality, it was at least something for Chakotay to actually do.
Chakotay's spirituality was a nice door for some subplots, and it was suspiciously dropped early on, but even with that part of his character intact he still ends up being Janeway's "yes man." And what were his relationships with the main cast? He had no relationship with Tuvok, his disagreements with Paris turned out to only be a ploy, he didn't interact with Neelix or Kes, his relationship with Torres was swiftly ignored in favor of the Tom/B'Elanna pairing, he had almost no interaction with Seven (until a completely out of left field subplot in the finale), and his relationship with Janeway went without being exploited for entire seasons. The writers just made him bland! And that's a shame, because I've found Robert Beltran to be one of those rare actors who is honest in person, and an excellent performer when given the material (which, sadly, has been rare in his career).