Hexagonal pattern #2379
Dark CC 0A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
More Textures
Background pattern 7 #227
Noise CC 0Pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
Batthern@2X #325
Grid CC BY-SA 3.0Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Well #1261
Wall CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Subtle Surface #925
Light CC BY-SA 3.0Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Wooden planks 2 #2569
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
"Rusted Metal", Grunge Background #1087
Metal CC BY-SA 3.0A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
45-Degree Fabric #1
Fabric CC BY-SA 3.0Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Subtle Stripes #751
Stripes CC BY-SA 3.0Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Page ornament #1990
Dark CC 0Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Background pattern 314 (colour 3) #1837
Green CC 0The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Square ornament 37 #2177
Dark CC 0Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
Background pattern 26 (black) #199
Dark CC 0Pattern formed from simple shapes. Black version.
Source Firkin
Seamless tile 4 #1812
Red CC 0Not strictly seamless in that opposite edges are not identical. But they do marry up to make an interesting pattern
Source Firkin
Dark Leather@2X #130
Dark CC BY-SA 3.0You were craving more leather, so I whipped this up by scanning a leather jacket.
Source Atle Mo
Background pattern 297 #1902
Red CC 0Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
ecorative divider 209 #2365
Dark CC 0Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Decorative divider 191 #2515
Dark CC 0From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Decorative divider 245 #2079
Dark CC 0From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Cubes #133
Light CC BY-SA 3.0This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
Dark Wall@2X #818
Dark CC BY-SA 3.0Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Floral background 18 #1834
Dark CC 0emixed from a JPG that was uploaded to Pixabay by Kyotime
Source Firkin
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
Prismatic Geometric Tessellation Pattern 2 No Background@2X #554
Noise CC 0Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ