Wallpaper/Desktop background

If you want to have a nice pic on your desktop instead of the default tinycore one, download it and save it in /opt/backgrounds. Then with the Wallpaper chooser (look in Control Panel), select if from the list.

That's all - if persistence is already up and running for you, the wallpaper will be there next time.

Bear in mind that images are often very large files, and keeping many image files in /opt/backgrounds will blow out the backup time unnecessarily. Since these are static files, you can also place your image file somewhere else such as in /tce and create a symlink to it in opt/backgrounds.

For a hard drive installation, it is better to use permanent directories for ~HOME and /opt, avoiding backing up.