A heavy hitter at 400x400px, but lovely still.
Source Breezi
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
Inspired by a pattern found in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
ZeroCC tileabel stone granite texture, edited from pixabay. CC0
Source Sojan Janso
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
White little knobs, coming in at 10x10px. Sweet!
Source Amos
Colorful Floral Background 3 No Black
Source GDJ
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim