This was formed by distorting an image of a background on Pixabay.
Source Firkin
Abstract Ellipses Background Grayscale
Source GDJ
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen
From a drawing in 'Worsborough; its historical associations and rural attractions', Joseph Wilkinson, 1879.
Source Firkin
Prismatic Hypnotic Pattern No Background
Source GDJ
This is a hot one. Small, sharp and unique.
Source GraphicsWall
A seamless striped fabric-like texture colored in a dark reddish brown color.
Source V. Hartikainen
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
From a drawing in 'A Life Interest', Mrs Alexander, 1888.
Source Firkin
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
Prismatic Polka Dots 3 No Background
Source GDJ
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Abstract Tiled Background Extended 8
Source GDJ
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Black version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ