The repop of the AMT Ford C-600 stake truck has about a dozen drums as cargo for the truck. There were also a couple drums included with the AMT Peterbilt wrecker kit. These are 1/25th scale kits but the diference in size of the drums would only show up with a pair of calipers or a mic. Fujimi and Hasagawa produce(d) kits of automotive mechanics that could probably be addapted into grouond crew figures.
I've been hoping that the 1/24th scale planes would stir up some after market activity that we automotive diorama builders could use
Carl