I'm primarily a bass player and I once had as many as 12 x basses, 2 x electric guitars, 1 x 12-string acoustic, 1 x 6-string acoustic, and 2 x mandolins at one time.
Nowadays, and much to my wife's delight, I'm down to just 4 basses, 2 x electric guitars, and 1 x mandolin, although I still get...