This was formed by distorting an image of a background on Pixabay.
Source Firkin
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
From a drawing in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
Prismatic Geometric Pattern Background 2
Source GDJ
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
A light background pattern with diagonal stripes. Here's a simple light striped background for you.
Source V. Hartikainen
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso