The music shops must be making a good living, judging by Mudcatters! My treasures are paltry next to some of the above. I have:

1 Martin 1971 12fret D35S, acoustic
1 Conn guitar, acoustic
1 Washburn guitar, acoustic (Kept in Oregon for visits there)
1 Dobro resonator guitar, 1974 (Acquired last week, just learning)
1 fiddle
1 mandolin (inherited from my brother when he died)
1 bodhran
1 Mountain Dulcimer
1 5string banjo
1 autoharp
1 pennywhistle
2 harmonicas
1 keyboard

I think that's it. Room for lots more.