"Polished Stone", Gray Background Pattern #1053
Stone CC BY-SA 3.0A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen
More Textures
Gray Dots Background Pattern #1127
Grid CC BY-SA 3.0A seamless background pattern with impressed gray dots.
Source V. Hartikainen
Decorative divider 243 #2082
Dark CC 0From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Tessellation 10 (variant 1) #2546
Grid CC 0An alternative colour scheme to the original seamless pattern.
Source Firkin
3D Wood #1475
Wood CC 0Basket Fibers, Basket Texture, Braid Background style CC0 texture.
Source 1A-Photoshop
Decorative divider 279 #1889
Dark CC 0Remixed from a drawing that was uploaded to Pixabay by captenpub.
Source Firkin
Background pattern 310 #1862
Red CC 0Based on an image that was uploaded to Pixabay by devanath
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
Faded Yellow Stripes, Background Pattern #1218
Yellow CC BY-SA 3.0A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
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
Dark Circles@2X #307
Dark CC BY-SA 3.0People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Background pattern green #1950
Green CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Subtle Freckles@2X #90
Light CC BY-SA 3.0This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
Background Pattern Green #1939
Green CC 0Fix and cc0 to get the tile this is based on.
Source SliverKnight
Natural Paper@2X #834
Paper CC BY-SA 3.0You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
Small Crosses@2X #116
Stripes CC BY-SA 3.0Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Tex2res4@2X #718
Dark CC BY-SA 3.0Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Nami #575
Dark CC BY-SA 3.0Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Background pattern 259 (colour 5) #2098
Pink CC 0Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
White Diamond #366
Diamond CC BY-SA 3.0To celebrate the new feature, we need some sparkling diamonds.
Source Atle Mo
Prismatic Geometric Tessellation Pattern 3 No Background@2X #556
Noise CC 0Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
Visual illusion #2586
Grid CC 0The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Wood Background Pattern #882
Wood CC BY-SA 3.0A seamless background pattern with a texture of wood planks. This wood background pattern has vertically arranged planks. You may try to rotate it 90°, to see how it will look like when the wood planks are arranged horizontally.
Source V. Hartikainen
Decorative divider 217 #2233
Dark CC 0Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Prismatic Curved Diamond Pattern No Background@2X #537
Diamond CC 0Prismatic Curved Diamond Pattern No Background
Source GDJ