I play most Western instruments to a basic degree, from woodwind, percussion, and brass families. Strings are my weak point, but I could play at an intermediate high school level if pressured. Once you have a pretty good grasp on music theory, the only barriers to learning a new instrument are proper technique (embrochure, bowing, fingerings, etc) and actually acquiring the instrument. I can work my way around a harp, for example, but would need to (and love to) spend some time getting the spatial element of it down.
I’m looking to get into steel drum, concertina, digeridoo, and bagpipes/goatpipes when I can find those instruments for cheap :)