Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
The starting point for this was a texture drawn with the 'Radial Colors' plug-in in Paint.net.
Source Firkin
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
The image is a design of blue glass.How about using it as background image?
Source Yamachem
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
This ons is quite old school looking. Retro, even. I like it.
Source Arno Declercq
Zero CC tileable yellow craft paper; scanned and made by me. CC0
Source Sojan Janso
A seamless paper background colored in pale yellow.
Source V. Hartikainen
Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
Prismatic Abstract Geometric Background 2
Source GDJ
A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić