Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin
It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
You know you love wood patterns, so here’s one more.
Source Richard Tabor
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Prismatic Abstract Geometric Background 5
Source GDJ
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
From a drawing in 'From Snowdon to the Sea. Striking stories of North and South Wales', Marie Trevelyan, 1895.
Source Firkin