Sign people up to be organ donors - you might even have some recipients come in and talk. My uncle died suddenly a few years ago, and it was shocking how many people were effected by donation. His heart and lungs were unusable, but his corneas, kidneys, and veins were fine, plus they were able to make skin grafts, which had the biggest impact. Over the next six months, our family received several letters along the lines of, “Because of his donation, I am able to see again…” "Because of this, I was able to attend my daughter’s wedding… "
This won’t make a big impact today - in fact, most likely, most of those 40 people will die at a ripe old age and won’t be able to donate anything. However, some of them might die in a way that will allow for donation, and that will impact much more than those 40 people.