My best volunteer position?
Hearing screening, hands-down.
I would go in the morning, print out the newborn census for the floor, and check it against the list of 'recently screened' babies.
Then I would go room to room with the hearing screening device. Usually it was just me, baby, and mom, but sometimes there'd be other family around.
I'd explain the test, make sure the baby was calm (preferably asleep, but sometimes feeding or just chilling), and then set the few-hours-old infant up with earphones and sensor pads.
I'd monitor them during the test (make sure they were calm and the sensors remained in place), then print the results.
I'd explain the results, briefly, to mom (this was harder when they did not pass right away...parents are very nervous about poor test results on newborns 😱 )
Then I'd mark the result in the chart and move on to the next baby. Usually hit 3-7 kiddos in a shift, depending on moods, speed, and distribution.
Definitely cool. I was hands-on, I was doing something which was required for everyone before discharge, and I got to interact with newborn babies. I got to speak to the mothers one-on-one, and even to practice my Spanish a fair amount! It was fun, it was educational for me, and it was the only volunteering position I've ever had where I felt as if I was actually performing a necessary function, and that the nurses would find their jobs harder if I were not to show up.