Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
Actually remixed from a pattern on Pixabay. But then noticed a very similar one on Openclipart.org uploaded by btj51q2.
Source Firkin
Seamless Green Tile Background
Source V. Hartikainen
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'A Rolling Stone. A tale of wrongs and revenge', John Hartley, 1878.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A background pattern with wavy green vertical stripes. This one has green stripes on a white background. Download if you like it.
Source V. Hartikainen
A seamless stone-like background for blogs or any other type of websites.
Source V. Hartikainen
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A free light orange brown wallpaper with vertical stripes designed for use as a tiled background on websites. An yet another background pattern with vertical stripes.
Source V. Hartikainen
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
Prismatic Abstract Geometric Background derived from an image on Pixabay.
Source GDJ
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Black paper texture, based on two different images.
Source Atle Mo
Based from Design Kindle
Prismatic Groovy Concentric Background 5
Source GDJ
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin