A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
This is the remix of "plant pattern 02".I changed the object color to white and the BG to purple.The image a seamless pattern derived from a weed which I can't identify.The original weed image is from here:jp.pinterest.com/pin/500744052301423641/
Source Yamachem
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
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin