Background pattern 208 (colour 2) #2462
Grid CC 0A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
More Textures
Light Grey Floral Motif@2X #345
Wall CC BY-SA 3.0Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Fake Luxury@2X #622
Diamond CC BY-SA 3.0Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Background pattern 275 #2033
Blue CC 0Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Decorative divider 206 #2380
Dark CC 0Derived from a corner decoration itself found as a jpg on Pixabay.
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
Dark Matter@2X #602
Dark CC BY-SA 3.0The name is totally random, but hey, it sounds good.
Source Atle Mo
Debut Light@2X #1013
Light CC BY-SA 3.0Classic 45-degree pattern, light version.
Source Luke McDonald
Background pattern 10 #216
Noise CC 0A pattern drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Stacked Circles #673
Light CC BY-SA 3.0A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Diamonds Are Forever #183
Diamond CC BY-SA 3.0Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
Background pattern 250 #2172
Dark CC 0To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
"Seamless Bark", Website Background. #879
Wood CC BY-SA 3.0This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
Tile-able Black Paper Background #1076
Paper CC BY-SA 3.0A black tile-able background with paper-like texture.
Source V. Hartikainen
Skewed Print #819
Dark CC BY-SA 3.0An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Paper 2 #21
Paper CC BY-SA 3.0New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
Overlapping planks 4 #2572
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Axiom Pattern #330
Grid CC BY-SA 3.0Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Abstract Tiled Background Extended 10 #521
Noise CC 0Abstract Tiled Background Extended 10
Source GDJ
Background pattern 251 (colour 2) #2166
Yellow CC 0To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Dark Metallic Background Pattern #1088
Metal CC BY-SA 3.0A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen