I attended Camp Hyrule in the summers of 2005 and 2006 (if I recall correctly).
In 2006, the theme was Super Mario Galaxy and my cabin voted to name itself The Cabin at the End of the Universe in honor of Douglas Adams' Restaurant at the End of the Universe. My cabin won and as a reward, we got this beautiful wallpaper featuring our cabin name and the camp's mascot, Stumpy. Here it is:
|Click to enlarge and download full size.|
Update: Cory S. shared some more Camp Hyrule wallpapers via Google+. Thanks for the contribution!
For more weird stuff Nintendo did, you should check out 7 of Nintendo's Best Practical Jokes That Were Actually Completely Serious.