As for today's TOD... it's a mighty good question. And you'd think I'd have a ready answer for it. I don't. Having been a piano and organ (and later, other keyboard instruments) player practically from birth, it took some years before I had any interest in other instruments. But during high school, two such interests did develop: drums (and percussion in general) and woodwinds.
I bought, or coerced my parents into buying, a cheap drum set and I took lessons from a friend who had been playing some of the local shows that were my first involvement in musical theater. This got me far enough to play a couple of shows myself, if not far enough to master true snare drum rolls and the like. Another friend loaned me her flute and piccolo, and I learned the fingerings from a chart and somehow figured out how to make some sounds through most of the range. I can assure you that neither of these ventures went very far, for which I'm sure the world of music is still grateful. But I did really like them and I'm happy for the additional knowledge both experiences provided. I never had the slightest inclination toward, or felt I could ever be good at, any string instrument. Not even guitar and such.
I think that if lightning were to strike and I could suddenly play another instrument, I'd want it to be something easily carried around. When it comes to schlepping instruments, the keyboardists and drummers suffer for everyone else's sins, and as wonderful and fascinating as that world is, I envy the folks with those little carrying cases.