An attache case. I guess that was before everyone switched to backpacks. But these days a lot of delivery services also traffick in 'discount' cigarettes and so they need a backpack for all that merch.
One of the last fun nights at Jackie I was on the dancefloor with a friend around 3AM when a very young, smartly suited fellow began making the rounds of the small crowd of latenighters to freely offer everyone copious boosts of blow from a small gold cylinder on a chain around his neck. The Old Type Meat Market indeed.