The NodeJS wallpaper from http://nodejs.org/logos/ .
This is a set of all available wallpapers as a zip file. The directory structure is configured to match that of your /usr/share/wallpaper/ .
That means if you have registered this directory with KDE (kbuildsycoca) you can use it as the lockscreen in any of the available sizes.
Sizes included and available through nodejs.org:
- 1024 x 768
- 1280 x 1024
- 1440 x 900
- 1920 x 1200
- 2560 x 1440