I’ve long argued that there should be more SVG-based wallpapers available, so that users can modify or tweak them to suit their own requirements.
A step in the right direction is Foxkeh’s Wallpaper Creator – a web page which lets you combine an image of Foxkeh (Mozilla Japan’s cute mascot) with a background, calendar and Firefox logo to create your own desktop image (or mobile phone wallpaper, or Firefox Persona). The source images are SVG, letting you scale Foxkeh to a size that suits you.
Unfortunately there doesn’t seem to be a way to save the finished SVG file, you can only export a bitmap image in PNG format. Although that’s fine for simple desktop wallpaper creation, it prevents any significant post-production editing. Perhaps that was intentional, as they don’t let you produce a wallpaper without a Firefox logo, either.
It’s currently in Beta, so maybe such an option will get added. In any case, if you’re after a cute, Firefox-promoting wallpaper with an optional calendar, it’s well worth trying.
Source: Mozilla Hacks