Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Zero CC tileable yellow craft paper; scanned and made by me. CC0
Source Sojan Janso
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Free tiled background with colorful stripes and white splatter.
Source V. Hartikainen
A seamless pattern of "sewn stripes" colored in light gray.
Source V. Hartikainen
The base gradient edited so now more details are rendered.
Source Lazur URH
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A heavy hitter at 400x400px, but lovely still.
Source Breezi
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Psychedelic Geometric Background No Black
Source GDJ
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Looks like an old wall. I guess that’s it then?
Source Viahorizon
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Prismatic Geometric Pattern Background 2
Source GDJ
A seamless pattern formed from a square tile based on a jpg on Pixabay. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Prismatic Abstract Geometric Background 3
Source GDJ
Prismatic Chevrons Pattern 5 With Background
Source GDJ
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ