I remember some talk on here about some of the smaller vending machines that can dispense the no longer made Bazooka Joe gum/comic pieces. I was in Michaels (craft store) the other day and noticed a box of Double Bubble gum called 'Retro 1928' flavor that is the same size, or at least close, to the old Bazooka sticks. Might be good if you have an gum vendor or something like that, just figured I'd give a heads-up.
http://www.oldtimecandy.com/dubble-bubble-1928-theater-box/