From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
Prismatic Abstract Geometric Background 3
Source GDJ
Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Looks like an old wall. I guess that’s it then?
Source Viahorizon
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A seamless pattern formed from a square tile based on a jpg on Pixabay. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Retro Circles Background 4 No Black
Source GDJ
Black paper texture, based on two different images.
Source Atle Mo
Based from Design Kindle
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
A colourful background drawn originally in paint.net and vectorised in Vector Magic.
Source Firkin
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
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Remix from a drawing in 'Ostatnie chwile powstania styczniowego', Zygmunt Sulima, 1887.
Source Firkin
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ