Inspired by a drawing in 'Poems', James Smith, 1881.
Source Firkin
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
Psychedelic Geometric Background No Black
Source GDJ
This metal background pattern resembles a metal plate with rivets. Solid rivets on a metal plate.
Source V. Hartikainen
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using 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
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Alternative colour scheme for the original floral pattern.
Source Firkin
Prismatic Geometric Pattern Background No Black
Source GDJ
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Here's a new paper-like background for free use on personal and commercial projects (this applies to all background patterns here).
Source V. Hartikainen