Batthern #324
Grid CC BY-SA 3.0Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
More Textures
Seamless Cardboard Texture #1212
Cardboard CC BY-SA 3.0A free background image with a seamless texture of cardboard. This texture of cardboard looks quite realistic, especially when is actually tiled.
Source V. Hartikainen
Black Metal Pipes #1089
Metal CC BY-SA 3.0An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
Floral pattern 14 #1754
Yellow CC 0The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Retro Circles Background 4 No Black@2X #423
Dark CC 0Retro Circles Background 4 No Black
Source GDJ
Decorative divider 290 #1817
Dark CC 0From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
Prismatic Groovy Concentric Background No Black #451
Noise CC 0Prismatic Groovy Concentric Background No Black
Source GDJ
Prismatic Triangular Background Design Mark II 5 #406
Dark CC 0Prismatic Triangular Background Design Mark II 5
Source GDJ
Prismatic Chevrons Pattern 5 With Background@2X #470
Dark CC 0Prismatic Chevrons Pattern 5 With Background
Source GDJ
Tessellation 14 variant 1 #2530
Grid CC 0A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Background patter 294 #1920
Dark CC 0Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
Olive Green Web Background Image #1335
Green CC BY-SA 3.0Seamless Olive Green Web Background Image
Source V. Hartikainen
Background pattern 9 (greyscale) #213
Dark CC BY-SA 3.0Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Leafy pattern 11 (colour) #1763
Green CC 0From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Prismatic Polka Dots Mark II 2 No Background@2X #533
Noise CC 0Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Solid@2X #846
Gray CC BY-SA 3.0A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Scribble Light@2X #740
Paper CC BY-SA 3.0A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
Eight Horns #1325
Light CC BY-SA 3.0Looks like an old rug or a computer chip.
Source Patutin Sergey
Indian Red Web Background #1172
Concrete CC BY-SA 3.0A free web background image with a seamless concrete-like texture and an Indian-red color.
Source V. Hartikainen