Sometimes you just need the simplest thing.
Source Fabricio
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Prismatic Hypnotic Pattern No Background
Source GDJ
Prismatic Snowflakes Pattern No Background
Source GDJ
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
The tile for this is based on a repeating unit close to a design on Pixabay. It can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
A repeating background of beige paper with vintage look. Repeats to infinity, as usual.
Source V. Hartikainen
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
The image depicts a seamless pattern of pine tree leaves.
Source Yamachem
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Green Background Pattern
Source V. Hartikainen
A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso