Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Derived from an image that was uploaded to Pixabay by TheDigitalArtist
Source Firkin
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
The name is totally random, but hey, it sounds good.
Source Atle Mo
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
You may use it as is, or modify it as you like.
Source V. Hartikainen
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
Retro Circles Background 7 No Black
Source GDJ
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
Prismatic Hypnotic Pattern No Background
Source GDJ
A repeating graphic with ancient pattern. I came up with this name/title at last minute, so you may find that there is very little of ancientness in this pattern after all.
Source V. Hartikainen