I like to photograph in misty and rainy conditions, unfortunately my camera of choice (Fuji X-Pro1) does not have weather seals! This is a problem.
So I have come up with a way to waterproof the camera, well showerproof really.
So first I take a thick transparent plastic bag, the thicker the better really.
Cut a hole in the front of the bag to the same size and shape as the lens hood. That's another thing, if you have different lens hoods you will need to make more than 1 bag.
See the image below, I have used a marker pen and drawn inside of the 18mm lens hood on to the bag, I then cut the corners, but then brought the scalpel in to create flaps on all four side. Remember, flaps are important!
Err on the side of caution with these stage, you can always cut a little further if it doesn't quite fit over the lens cap.
I also cut a curved section out of the right hand rear of the bag, this make it easier to get your hand in and under to access the controls of the camera. I'm usually working on a tripod when shooting in the rain, but this would be useful if your hand holding the camera too.
So now you have the bag ready to go, you need to have your camera and place it in the bag and then poke your lens (hood) through the hole in the bag. You need to get it right over the lens hood, past the flat part and on to the circular part. Then secure those flaps with a rubber band. ..
That's it! It might not last forever, but it's only the cost of a plastic bag to make another. Enjoy.