A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
A repeating background with seamless texture of stone. There haven't been any stone-like backgrounds for a while, so I have decided to create one more. The rest can be found in the appropriate category.
Source V. Hartikainen
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
You know you love wood patterns, so here’s one more.
Source Richard Tabor