Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin
Sharp but soft triangles in light shades of gray.
Source Pixeden
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Number five from the same submitter, makes my job easy.
Source Dima Shiper
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
I scanned a paper coffee cup. You know, in case you need it.
Source Atle Mo
Prismatic Geometric Pattern Background
Source GDJ
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
A new take on the black linen pattern. Softer this time.
Source Atle Mo
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc