Cardboard #278
Paper CC BY-SA 3.0A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
More Textures
Tessellation 16 (colour 6) #2210
Colorful CC 0The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Smooth Wall@2X #28
Light CC BY-SA 3.0Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Prismatic Curved Diamond Pattern No Background@2X #537
Diamond CC 0Prismatic Curved Diamond Pattern No Background
Source GDJ
Decorative divider #1995
Yellow CC 0From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
Fake Luxury #621
Diamond CC BY-SA 3.0Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Background pattern pink #1954
Pink CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Abstract Tiled Background Extended 8 #519
Noise CC 0Abstract Tiled Background Extended 8
Source GDJ
Wood Stripe Pattern #888
Wood CC BY-SA 3.0A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
Snowflake remix #155
Dark CC 0A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
Elegant Grid@2X #317
Wall CC BY-SA 3.0This is a hot one. Small, sharp and unique.
Source GraphicsWall
Simple Horizontal Light@2X #983
Light CC BY-SA 3.0Sometimes you just need the simplest thing.
Source Fabricio
Leafy design 18 (colour)@2XaFloral design 96 (colour) #1787
Green CC 0From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Prismatic Abstract Geometric Background 4 #271
Noise CC 0Prismatic Abstract Geometric Background 4
Source GDJ
Flourish pattern (colour 2) #1738
Red CC 0Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Background pattern 214 (colour 2) #2376
Red CC 0A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
Green Fibers@2X #92
Dark CC BY-SA 3.0The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
flower seamless pattern-remix #2445
Fabric CC 0This is a remix of "flower seamless pattern".I rotated the original image by 90 degrees.This is a seamless pattern of flowers.These horizontal wavy lines are one of Edo patterns which is called "tatewaku or tachiwaku or 立湧" that represents uprising steam or vapor.
Source Yamachem
Strawberry pattern #1795
Red CC 0To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Background pattern 226 (colour 6) #2316
Pink CC 0A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Carbon Fiber@2X #4
Carbon CC BY-SA 3.0A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
Decorative divider 243 #2082
Dark CC 0From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin