From a drawing in 'Az Osztrák-Magyar Monarchia irásban és képben', 1885.
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Sometimes you just need the simplest thing.
Source Fabricio
Same classic 45-degree pattern, dark version.
Source Luke McDonald
Inspired by a drawing in 'Poems', James Smith, 1881.
Source Firkin
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
This is the remix of "Colorful Floral Pattern Background 3" uploaded by "GDJ". Thanks.
Source Yamachem
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Prismatic Groovy Concentric Background 3
Source GDJ
The image depicts a seamless pattern of a tortoise in tortoiseshell (hexagon).
Source Yamachem