You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
There are many carbon patterns, but this one is tiny.
Source Designova
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Prismatic 3D Isometric Tessellation Pattern 6
Source GDJ
You were craving more leather, so I whipped this up by scanning a leather jacket.
Source Atle Mo
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
Remixed from a drawing in 'Incidents on a Journey through Nubia to Darfoor', F. Ensor, 1891.
Source Firkin
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Alternative colour scheme to the original.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
More in the paper realm, this time with fibers.
Source Jorge Fuentes
A free grid paper background pattern for using on web sites.
Source V. Hartikainen
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Background pattern made in "Grunge-Like" style. Available in both SVG and JPG formats. Edit to your needs then click the download button.
Source V. Hartikainen
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 free pink background pattern.
Source V. Hartikainen