You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
Inspired by the B&O Play, I had to make this pattern.
Source Atle Mo
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
The texture of this background image has some similarities with leather, and it's colored in a dark brown color. So, if you are looking for a dark brown background image for your website, this may be an option for you.
Source V. Hartikainen
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Use shift+alt+i on the selected rectangle in Inkscape to get the tile this is based on
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Prismatic Floral Background No Black
Source GDJ
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
A repeating background with seamless texture of stone. There haven't been any stone-like backgrounds for a while, so I have decided to create one more. The rest can be found in the appropriate category.
Source V. Hartikainen
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
The square tile this is based on 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
A seamless light gray paper texture with horizontal double lines.
Source V. Hartikainen
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin