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
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
A seamless pattern with green and yellow diagonal lines on top of a white dotted background.
Source V. Hartikainen
Subtle scratches on a light gray background.
Source Andrey Ovcharov
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Background Wall, Art Abstract, white Well & CC0 texture.
Source Ractapopulous
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
A bit strange this one, but nice at the same time.
Source Diogo Silva
This is a remix of "flower seamless pattern".I rotated the original image by 90 degrees.This is a seamless pattern of flowers.These horizontal wavy lines are one of Edo patterns which is called "tatewaku or tachiwaku or 立湧" that represents uprising steam or vapor.
Source Yamachem
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The base gradient edited so now more details are rendered.
Source Lazur URH
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
There are many carbon patterns, but this one is tiny.
Source Designova
Prismatic Abstract Geometric Background 5
Source GDJ
Fix side and a seamless pattern formed from circles.
Source SliverKnight