Cash money/Paper Currency and the spread of virus.
I would like to see merchants start using a money disinfecting system before turning cash over again. Such a process should be easy to design and administer, and a successful implementation would lead to reducing one the worst vehicles of viral transmission.
BONUS TIP: NEVER, EVER pump gas bare handed. You know where your hands have been, do you know where mine were? For god sake use a glove when handling a gas pump handle.