Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Abstract Ellipses Background Grayscale
Source GDJ
A seamless web texture with illustration of pale color stains on canvas.
Source V. Hartikainen
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
Similar to original, but without gaps in between the arrows. This seamless pattern was created from a rectangular tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Tiny circle waves, almost like the ocean.
Source Sagive
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Alternative colour scheme for the original floral pattern.
Source Firkin
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Remixed from an image on Pixabay uploaded by Prawny
Source Firkin
Prismatic Abstract Geometric Background 4
Source GDJ
A seamless background of warped stripes on paper.
Source V. Hartikainen
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
This is the remix of "Tileable Wave Pattern 2" uploaded by "Arvin61r58".Thanks.I added a wire-mesh fence seamless pattern as a lower layer.
Source Yamachem