I had the strangest theft in a govt campground a couple of years ago. I enjoy canoeing solo but in order to balance the weight, I use an inflatable 5 gal 'cube' you can buy for $5 to store drinking water. It weights about 60 lb full and I just use lake water to fill it and place it in the bow as a counter balance. I had the canoe chained to a tree by the boat launch overnight with the water cube right next to it. Next morning I came to the launch to go fishing and the cube was gone. Too heavy for kids to take it and after many seasons of using lake water it was discoloured, so no one in their right mind would want to use it for drinking water!
What was frustrating was that it happened to be a Sunday and all the hardware shops in the nearby town were closed so I couldn't replace it until Monday. Couldn't canoe without it so lost a whole day of fishing and the thief got what? A worthless contaminated drinking water vessel!
Moral is: not what you can afford to replace but what you can do without if you are simply unable to replace it while camping.
Howie