I enjoy teaching and mentoring youngsters. Long, long before the acronym S.T.E.M. was coined our hobby supported it in droves, and continues to do so nicely to this day. So good to see many people mention elements of it, like building and problem solving.
However, I also submit that we should extend it to include another oft-mentioned item here: arts and crafts.
With that in mind how about the following?:
Science
Technology
Engineering
The Arts
and Mathematics
S.T.E.A.M. -- How could there be a more perfect match?
Mike