so it wasn’t my idea but I don’t remember exactly where i saw it. On the outside I have a small stainless steel [mixing bowl]https://www.amazon.com/dp/B003A3JLIQ?ref=ppx_pop_mob_ap_share with a hole cut in the center where I attach the bellows.Inside there is a small [seasoning bowl] https://www.amazon.com/dp/B08RN7L4BY?ref=ppx_pop_mob_ap_share with holes cut in the sides to direct the airflow to the bottom of the chamber. The two bowls are connected via a bolt and wing nut threaded through holes in the base of each bowl and which goes through a vent in the base.
I can take pics tomorrow or later if it helps.