A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
Here's an yet another seamless note paper texture for use as a background on websites.
Source V. Hartikainen
A tile-able background for websites with paper-like texture and a grid pattern layered on top of it.
Source V. Hartikainen
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Prismatic Groovy Concentric Background No Black
Source GDJ
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
Light and tiny, just the way you like it.
Source Rohit Arun Rao
Remixed from a drawing in 'Incidents on a Journey through Nubia to Darfoor', F. Ensor, 1891.
Source Firkin
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
The original enhanced with some gradients.
Source Firkin
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A repeating background of beige paper with vintage look. Repeats to infinity, as usual.
Source V. Hartikainen