I normally carry my camera (Panasonic Lumix TZ5) in the Exped XXS dry bag. I usually trap a bit of extra air so there’s some cushioning. However, here’s a really simple way of converting the dry bag into a padded dry bag and giving a camera a bit of added protection.
Cut an oblong from a piece of spare foam. I used an old sleeping mat.
Fold it into a “U” shape and insert into the dry bag.
Insert camera and seal.
Hey presto! A padded and waterproof camera bag.