A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
Prismatic Abstract Line Art Pattern Background
Source GDJ
A seamless background colored in pale orange. It has a paper like texture with diagonal grid pattern.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Subtle scratches on a light gray background.
Source Andrey Ovcharov
The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.
Source Yamachem
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
This one needs to be used in small areas; you can see it repeat.
Source Luca
A background pattern with blue on white vertical stripes.
Source V. Hartikainen
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
From a drawing in 'La Principauté de Liège et les Pays-Bas au XVIe siècle', Société des Bibliophiles Liégeois ,1887.
Source Firkin
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
Seamless Prismatic Geometric Pattern With Background
Source GDJ