i washed my 14 yr olds ipod shuffle twice and it still works but i think it was because the headphones were attached because when i washed my 11 yr olds without headphones it broke lol well i am always telling them to check their pockets before putting them out to be washed
I kept using the old headphones from my Mini with my newer Classic, which meant the new headphones stayed really fresh. Then the old ones finally broke so I dug out the new set, used them twice and put them through the washing machine and tumble dryer, in my jeans pocket.
Needless to say they stopped working I've got a set of JVC in-ear ones now, they're quite nice.