Gray Lines #913
Light CC BY-SA 3.0Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
More Textures
Background pattern 262 #2075
Dark CC 0Inspired by a pattern found in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Background pattern 306 (colour 3) #1880
Colorful CC 0Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Floral divider 3 #1751
Dark CC 0From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Translucent Fibres #943
Light CC BY-SA 3.0The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
Carbon Fiber Big #326
Carbon CC BY-SA 3.0Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Square ornament 37 (colour) #2176
Colorful CC 0Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
First Aid Kit@2X #702
Fabric CC BY-SA 3.0No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
Patterned metal plate 7 #2556
Metal CC 0From an image on opengameart.org shared by rubberduck.
Source Firkin
Background pattern 117@2X #525
Noise CC 0A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
Abstract Tiled Background Extended 10 #521
Noise CC 0Abstract Tiled Background Extended 10
Source GDJ
Disks pattern #1890
Dark CC 0Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
Decorative divider 205 #2381
Dark CC 0Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
Prismatic Groovy Concentric Background 3@2X #458
Noise CC 0Prismatic Groovy Concentric Background 3
Source GDJ
Paper Fibers@2X #1061
Paper CC BY-SA 3.0Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Pink Background Pattern #1232
Pink CC BY-SA 3.0A free pink background pattern.
Source V. Hartikainen
Fabric pattern 3 #2387
Fabric CC 0Alternative colour scheme. 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
Textured Grid Paper #1316
Orange CC BY-SA 3.0A tile-able background for websites with paper-like texture and a grid pattern layered on top of it.
Source V. Hartikainen
Tex2res5 #725
Fabric CC BY-SA 3.0Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Background pattern 220 (colour) #2359
Pink CC 0Colour version of the original seamless pattern.
Source Firkin
Diamond pattern (colour 4) #2282
Blue CC 0From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Blue & Fissure & Cube #1702
Wall CC 0Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous