From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
White circles connecting on a light gray background.
Source Mark Collins
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Sometimes you just need the simplest thing.
Source Fabricio
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
8 by 8 pixels, and just what the title says.
Source pixilated
Prismatic Hexagonalism Pattern No Background
Source GDJ
Zero CC Mossy stone tileable texture, photographed and made by me. CC0
Source Sojan Janso
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Inspired by a pattern found in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin