This is a remix of "geometrical pattern 01".
Source Yamachem
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
A bit strange this one, but nice at the same time.
Source Diogo Silva
From drawing in 'Musings in Maoriland', Thomas Bracken, 1890.
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
A seamless green background texture. The image is distributed under a Creative Commons License (like all of the images here).
Source V. Hartikainen
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Number five from the same submitter, makes my job easy.
Source Dima Shiper
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin