This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
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
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
A white version of the very popular linen pattern.
Source Ant Ekşiler
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless background tile of aged paper with shabby look.
Source V. Hartikainen
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
From a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Prismatic Hexagonalism Pattern No Background
Source GDJ
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen