It's a "right click" and "drag & drop" operation for the most part. The
icons are available all over the internet. The graphics that make the
toolbars look like one toolbar are cropped out of screenshots of various
applications. I use my home folder a lot like a Windows C drive and is
where I store all my "non-OEM" wallpapers, icons and graphics. It's a
lot easier to save everything there than to track down their proper files.