You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
A pattern formed from repeated instances of corner decoration 8. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Colour version of the original pattern.
Source Firkin
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Actually remixed from a pattern on Pixabay. But then noticed a very similar one on Openclipart.org uploaded by btj51q2.
Source Firkin
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
A classic dark tile for a bit of vintage darkness.
Source Listvetra
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Formed by distorting an image on Pixabay that was uploaded by gustavorezende. To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Background Wall, Art Abstract, white Well & CC0 texture.
Source Ractapopulous
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
The image is a design of blue glass.How about using it as background image?
Source Yamachem
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Light and tiny, just the way you like it.
Source Rohit Arun Rao
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen