Prismatic Groovy Concentric Background 4
Source GDJ
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Black brick wall pattern. Brick your site up!
Source Alex Parker
Zero CC tileable brick texture, photographed and made by me. CC0
Source Sojan Janso
The following orange background pattern resembles a honeycomb.
Source V. Hartikainen
A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
This white background pattern has a seamless grunge style texture. Here's a white grunge style background pattern. Use it as a tiled background image on web sites or for other purposes.
Source V. Hartikainen
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Utilising some flowers from Almeidah. To get the unit 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 textured orange background pattern with vertical stripes.
Source V. Hartikainen
This is a hot one. Small, sharp and unique.
Source GraphicsWall
Prismatic Groovy Concentric Background
Source GDJ
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim