Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Adapted from an image that was uploaded to Pixabay by Anerma.
Source Firkin
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
The name is totally random, but hey, it sounds good.
Source Atle Mo
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868.
Source Firkin
This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
A free seamless background texture that looks like a brown stone wall.
Source V. Hartikainen