You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
A heavy hitter at 400x400px, but lovely still.
Source Breezi
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
Colour version of the original pattern.
Source Firkin
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
From a drawing in 'An Old Maid's Love. A Dutch tale told in English', Maarten Maartens, 1891.
Source Firkin
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Retro Circles Background 5 No Black
Source GDJ
A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Black version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
A free seamless background with pink spots.
Source V. Hartikainen