We have a 4x2x2 and I know what you mean.
We found some wallpaper (without paste) borders and small mural designs we really like. The one we want is only 20 high...but I think we can make it work with paint above it.
The only thing is they can be $$ :shock: The one we gotta have is $54! LOL We love it so much that we are saving for it.
I also went to the art dept. at Michaels...could also go to Hobby Lobby or another art store, and found some GREAT pics/paintings that would work. Some could be cut down to size w/o losing the main pic.
I plan to take it in and have it cold laminated....I will put a velcro strip on it and on the wall of our viv so that we can easily change it if we ever want/need to.
Another thing...do you have a nice camera? I have a nice one and also considered taking a photo with a wide lense of somewhere cool in our town and taking it in to a pro developer and enlarging it.
Just a few ideas I had to come up with b/c of the same problem. Let us know if you find something!