Background Wall, Art Abstract, Watercolor Vintage style CC0 texture.
Source Ractapopulous
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
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A free light orange brown wallpaper with vertical stripes designed for use as a tiled background on websites. An yet another background pattern with vertical stripes.
Source V. Hartikainen
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This light yellow background pattern consists of an irregular pattern of spots. Here's a light background pattern with yellowish tint.
Source V. Hartikainen
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin