goldentree

RankItemQuantity
#4414-dimensional guitar1
#459C.A.R.N.I.V.O.R.E. button1
#534Danglin' Chad's loincloth1
#377Zim Merman's guitar2
#365a butt tuba1
#1006acoustic guitarrr1
#395big bass drum1
#390black kettle drum1
#429bone flute1
#665bone rattle1
#235charming flute1
#437dented harmonica1
#597didgeridooka1
#299finger cymbals1
#541heavy metal thunderrr guitarrr1
#356infernal fife1
#368knob bugle1
#397magic whistle1
#471ocarina of space1
#190out-of-tune biwa1
#466plastic guitar1
#489rave whistle1
#1825stolen accordion1

Wow, that's 24 items total!

what items are this player missing?