You can find Bill Atkinson's open-source instructions for Jaguar (5-MeO-DMT) Vape Pens from a link here:
https://boingboing.net/2025/07/10/apples-bill-atkinson-creat...
In terms of ergonomics pens can't be beat, though if you'd rather go from 0 to escape velocity on a single hit, "the machine" is the way to go (https://wiki.dmt-nexus.me/The_Machine)