Interesting topic!! You mean instruments in terms of their playing style and personality, or in terms of their physical appearance? =)
Dani - piano b/c multi-faceted, can be solo (singles) or not (doubles), complex (10 notes making beautiful music, or as is the case lately, tons of dissonance)
Kim - sax b/c smooth yet stylishly bright
Jelena - haha about the triangle, mmcdonald!
Serena - tuba. booming and blunt, thick and curvy.
JenCap - bagpipe, a whole bunch of expletive-worthy noise, whining and contradictions. (sorry, no offense to the scots.)
Anna K - a reedless clarinet, looks like an instrument but doesn't make a peep