All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Colour version of the original pattern.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A seamless background pattern with impressed gray dots.
Source V. Hartikainen
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
Prismatic Geometric Pattern Background 2
Source GDJ
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin