Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Seamless Green Tile Background
Source V. Hartikainen
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
The image depicts meshed silhouettes of various things.The original image is an OCAL clipart called "Enter FOSSASIA 2016 #IoT T-shirt Design Contest" uploaded by "openclipart".Thanks.
Source Yamachem
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Retro Circles Background 7 No Black
Source GDJ
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
A colourful background drawn originally in paint.net and vectorised in Vector Magic.
Source Firkin
Prismatic Polka Dots Mark II No Background
Source GDJ
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim