Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
Here's an yet another seamless note paper texture for use as a background on websites.
Source V. Hartikainen
Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
This could be a hippy vintage wallpaper.
Source Tileable Patterns
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Free tiled background with colorful stripes and white splatter.
Source V. Hartikainen
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
A seamless light gray paper texture with horizontal double lines.
Source V. Hartikainen
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan