Irvue - (previously Unsplash Wallpaper) Gorgeous wallpapers on your Mac.
Iceberger - Draw an iceberg and see how it will float
Isometric - Create beautiful, abstract works of art & optical illusions
Stickman Builder - Free parametric graphic Stickman Builder, creates fascinating stick figures on the fly.
Satellite Eyes - Changes your Mac wallpaper to a satellite map of your local
Drawy - Learn to draw, use camera to score your drawings