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Drum traps can be inverted so those, too, could be played without having to accommodate the 90%.
Piano/keyboards are never reversed for lefties (guess they'd have to write sheet music upside down too), but left-dominant dexterity could generate interesting compositions, interpretations and performances…
TRAP MUSIC MUSEUM SHIRT
Most of the wind instruments (except flute / piccolo) really don't force hand dexterity. Sax, like flute, lends itself to right-handedness, but it should be easily overcome since both hands are used equally.
Brass are all made for right hand fingering, so those are low on the list…
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