An attempt for cleaning up the original image in a few steps.
Source Lazur URH
Classic vertical lines, in all its subtlety.
Source Cody L
8 by 8 pixels, and just what the title says.
Source pixilated
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
This is the remix of "Tileable Wave Pattern 2" uploaded by "Arvin61r58".Thanks.I added a wire-mesh fence seamless pattern as a lower layer.
Source Yamachem
A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
U.S.-based National Fire Protection Association standard fire diamond for flagging risks posed by hazardous materials. The red diamond has a number 0-4 depending on flammability. The blue diamond has a number 0-4 depending on health hazard. The yellow has a number 0-4 depending on reactivity. the white square has a special notice, e.g OX for oxidizer.
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
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Run a restaurant blog? Here you go. Done.
Source Andrijana Jarnjak
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
I have no idea how to describe this one, but it’s light and delicate.
Source JBasoo
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
An alternative colour scheme for the original background.
Source Firkin