Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
A white version of the very popular linen pattern.
Source Ant Ekşiler
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
This is a hot one. Small, sharp and unique.
Source GraphicsWall
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Remixed from a PNG that was uploaded to Pixabay by gingertea
Source Firkin
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The image is a design of blue glass.How about using it as background image?
Source Yamachem
From drawing in 'Musings in Maoriland', Thomas Bracken, 1890.
Source Firkin
Prismatic Groovy Concentric Background 5
Source GDJ
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
There are many carbon patterns, but this one is tiny.
Source Designova
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
A repeating background of thick textured paper. Actually, it turned out to look like something between a paper and fabric.
Source V. Hartikainen
Here's a camo print with more tan and less green, such as might be used in a desert scenario. This is tileable, so it can be used as a wallpaper or background.
Source Eady