I would guess you see only about 1-5% of all the design that designers actually do. There are so many scanned sketches, unused Photoshop layers, half-illustrated Illustrator documents and a mountain of revisions that sit lonely in a junkyard of forgotten file folders.
I remembered a set of brushstrokes I made that weren't quite right for a recent project. I hate to let them sit lonely and forgotten, so I tinkered with them a bit and now they're seeing the light of day.
And, here's a free (for personal use only) download for you of the blues brushstroke pattern: DOWNLOADABLE WALLPAPER FOR IPHONE/MOBILE