A criss-cross pattern similar to one I saw mown into a sports field.
Source Firkin
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Fix and cc0 to get the tile this is based on.
Source SliverKnight
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
White handmade paper pattern with small bumps.
Source Marquis
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
This one is amazing, truly original. Go use it!
Source Viahorizon
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
A version without colours blended together to give a different look.
Source Firkin
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Sharp pixel pattern, just like the good old days.
Source Paridhi
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Kaleidoscope Prismatic Abstract No Background
Source GDJ
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf