Before 52 Folk Songs:

four whistles (C, high G and two Ds)
recorder (plastic, Aulos)
flute
toy reed organ
small pair of bongoes, bought in about 1975, never used


After 52 Folk Songs:

four whistles (C, high G and two Ds)
recorder (plastic, Aulos)
recorder (wood, Moeck)
flute
toy reed organ
melodica
English concertina
zither
ukulele
small pair of bongoes, bought in about 1975

The most recent acquisition was the uke, which I'm still finding my way around. You can hear all of them on 52 Folk Songs; most of them (including the uke) feature on this track.