Doctor/Scientists 3D print a replacement trachea for (eventual, probably) implantation into the human body. That’s cool for some pretty important structural problems. Coming later (also eventually, probably): 3D printed replacement noses and ears. That plus some new burn healing skin production stuff currently in development will save some peoples’ ability to live normal lives.
I know it is a curse to live in “interesting times” but . . . it’s kinda neat also.