If you see a background or a bar that you would like to use,
-PCs-Either left click on the picture and a menu will appear. Select save picture as, or select or drag it to where you would like to save it.
-Macs-Hold down your mouse on the picture that you would like. A menu will appear as to how you should save the image. Or you could also click and drag it to where you want it.
Most of these object and backgrounds are scanned from direct sources. The backgrounds are mostly from Japanese paper with a little manipulation. The icons are either taken from pictures of objects or are scanned in objects.