Not the greatest design: pinned because I want to remember that I can create connecting chambers by bonding two carved pieces of wood, i., you drill the outer piece straight down and then at 90 degrees. Then drill the main section and bond.
GP Paps X and Spheroid Atty by VapourArt. Machined diameter mod with adjustable airflow and bottom switch from GP Piccolo. Comes with polished button, polished 510 connector, and 3 modular brushed tubes that allows battery types - + kick.