Harp
Especially in the lower range
Vibraphone
Same
Theramin
Absolutely gorgeous in its own wobbley way. There is something profoundly soothing about this thing that I cant really explain but its otherworldy, almost utopic and chronotopic
Glass Marimba
Soft mallets
Bass Marimba
Extrapolating here but I cant see how it wouldn’t
Love me a clarinet. Also a muted trumpet is pretty pleasing. I think though the most across the board genre neutral pleasing instrument timbre is the piano. It does it all.