The best method would be a custom fit waterproof case for your camera.
If you rather not spend the several hundred dollars that these cost,
you may consider a waterproof bag.
On my Hawaii vacation, I used one of these Aqupacs on our wetter
outings:
http://www.amazon.com/exec/obidos/tg/detail/-/B0000DID5E/qid=111375551...r=8-5/r
It did a superb job of keeping the camera dry. I also took some
under-water photos, but the bag did not do so well there. It was
difficult for me to see through the view finder or to see the small
screen underwater. The camera also had a difficult time focusing
through the bag. It did reasonably well out of water in the bag. I
would get an occasional drop on the bag distort the image, but it was
better than ruining the camera.
After this experience, I would either opt for the expensive underwater
case or use a disposable underwater camera. But, for your needs of
keeping the camera dry while not being used, the bag may be a perfect
inexpensive solution.
Charlie
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