Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
You know you love wood patterns, so here’s one more.
Source Richard Tabor
Looks like an old wall. I guess that’s it then?
Source Viahorizon
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
Might not be super subtle, but quite original in its form.
Source Alex Smith
Prismatic Curved Diamond Pattern No Background
Source GDJ
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
A dark metallic background with a pattern of stamped dots. Here's a dark "metallic" background pattern for you.
Source V. Hartikainen
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.
Source Atle Mo
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-yellow.
Source Yamachem
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Redrawn based on a drawing in 'По Сѣверо-Западу Россіи' Konstantin Sluchevsky, 1897.
Source Firkin
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
From a drawing in 'Less Black than we're painted', James Payn, 1884.
Source Firkin
U.S.-based National Fire Protection Association standard fire diamond for flagging risks posed by hazardous materials. The red diamond has a number 0-4 depending on flammability. The blue diamond has a number 0-4 depending on health hazard. The yellow has a number 0-4 depending on reactivity. the white square has a special notice, e.g OX for oxidizer.
Source Firkin