One of my prized papers is part of a very old map of the Florida waterways, from the days when they printed maps on quality thick paper. I've been hoarding it and it was time to bite the bullet.
I used a piece as a background for my sailboats, drawn with ink then painted in white, and adhered to a postcard-size watercolour paper. It's small, but I was careful with it because I didn't want to ruin my precious paper.
Simplicity is the removal of the useless and the unnecessary--source unknown