Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
The image depicts a seamless pattern of a tortoise in tortoiseshell (hexagon).
Source Yamachem
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
A floral background formed from numerous clones of flower 117.
Source Firkin
Fix and cc0 to get the tile this is based on.
Source SliverKnight
It’s big, it’s gradient—and it’s square.
Source Brankic1979
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
One more sharp little tile for you. Subtle circles this time.
Source Blunia
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
The name is totally random, but hey, it sounds good.
Source Atle Mo
Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
Prismatic Snowflakes Pattern No Background
Source GDJ