I keep an old beater full size, all steel handgun in the top drawer of the vanity. The gun looks like hell but it is full of Cajun goodness inside. It has a 19 round mag, one chambered and a 19 round spare mag. It's been in there for a good bit and doesn't seem to need any more maintenance than the ones stored in the safe.
I just carry my EDC, Colt Defender, in a zip-lock bag in a nylon shoulder holster. It hasn't gotten wet in the shower yet. It does take a little while for the holster to dry though.