General:
All vending machines will have alongside the coin chute an aperture capable of accepting and appraising small items, e.g. watches, cheap jewelry, etc. Customers with insufficient change may then choose to barter for the desired product.
Soda Vending Machines:
...will no longer drop the can, shaking up the contents. A robot arm will carefully extract the can from cold storage, pass it through an opening and, if required, makes change for large denomination notes.
Cigarette Vending Machines:
...will, after accepting payment, but before dispensing cigarettes, engage the customer in medical, sociological and ethical arguments against smoking. If the customer is swayed by the arguments the vending machine will offer a refund.
Snack Vending Machines (a):
... will have a notice mounted at eye level informing the customer of the odds of a snack being brought fully forward by the rotating spiral and successfully dispensed down the chute, or…
Snack Vending Machines (b):
...will have a set of hydraulic pistons connected to a motion detector in the dispenser. If, after snack selection, no object is detected arriving at the dispenser the pistons will rock the machine back and forth until a snack drops or the machine falls over.