Dark wooden pattern, given the subtle treatment. based on texture from Cloaks. https://cloaks.deviantart.com
Source Atle Mo
Prismatic Curved Diamond Pattern No Background
Source GDJ
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
Neat little photography icon pattern.
Source Hossam Elbialy
The image depicts a seamless pattern which was made using stripe-like things including borders.I used OCAL cliparts called "Blue Greek Key With Lines Border" uploaded by "GR8DAN" and "daisy border" uploaded by "johnny_automatic".Thanks.
Source Yamachem
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
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
A seamless pattern formed from background pattern 102
Source Firkin
Prismatic Triangular Seamless Pattern III With Background
Source GDJ
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
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. Alternative colour scheme.
Source Firkin
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
A light background pattern with diagonal stripes. Here's a simple light striped background for you.
Source V. Hartikainen
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight