TLUDs.   On the left, the single stage, two can, Sweet 16 is cranking away.  Its outer Costco 3 lbs coffee can, when inverted, is the second stage outer can of the two stage P80 TLUD.  To the right are: 1 gallon quenching can; Weber charcoal starter - inverted - used as the outer can for the first stage of the P90;  a 3 lbs Costco coffee can used as the burn pot of the P90;  and the open ended one quart can used as a focusing can in the second stage of the P90.  In the P90, the burn pot sits inside the Weber.  These two cans form the first stage.   Note:  In the P90, the both cans of the second stage rest on top of the basket rings of the Weber.