It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
Used a cherry by doctormo to make this seamless pattern
Source Firkin
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
A version without colours blended together to give a different look.
Source Firkin
A seamless pattern formed from a rectangular tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner