I had about twenty figures as a kid, and never lost any of them. I did lose some weapons and parts, though :

- the green helmet of Hawk v2 : lost in the garden when scrambling to get all my Joes out of a sudden rain (I still hope I'll find it in my parent's garden someday; I once found a marble there I lost years earlier...)

- the gun of Hawk v2 : presumed stolen by a friend who came to play and who asked -only days before it got lost- whether he could have it

- the gun of Alley-Viper : lost in the garden during heated battle; looked for it for hours, combing through the grass, didn't find it; my mother found it by accident a few days later, two meters from the area where I thought I lost it

- the antenna of Desert Fox : snapped and stayed behind when the Desert Fox emerged from the bushes in which it was hiding; never found again between the countless thin brown twigs of those bushes

Odd how someone can still remember stupid little things like that, twenty years later...