After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Used correctly, this could be nice. Used in a bad way, all hell will break loose.
Source Atle Mo
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Prismatic Basic Pattern 2 No Background
Source GDJ
A heavy hitter at 400x400px, but lovely still.
Source Breezi
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Seamless pattern formed from a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A bit strange this one, but nice at the same time.
Source Diogo Silva
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
A seamless marble-like texture colored in light blue.
Source V. Hartikainen
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
This is sort of fresh, but still feels a bit old school.
Source Martuchox
Prismatic Abstract Geometric Background 4
Source GDJ
A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin