CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A repeating background with wood/straw like texture.
Source V. Hartikainen
To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Prismatic Hypnotic Pattern No Background
Source GDJ
If you want png files of thisu can download them here :
Source Viscious-Speed
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
Geometric triangles seem to be quite hot these days.
Source Pixeden
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
A version without colours blended together to give a different look.
Source Firkin
The image depicts a shell seamless pattern.I used an OCAL clipart called "Shell" uploaded by "jgm104".Thanks.
Source Yamachem
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
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
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
A nice one indeed, but I have a feeling we have it already? If you spot a copy, let me know on Twitter.
Source Graphiste
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ