Same classic 45-degree pattern, dark version.
Source Luke McDonald
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
Abstract Tiled Background Extended 8
Source GDJ
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
This one is amazing, truly original. Go use it!
Source Viahorizon
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
An aged paper background tile with smeared and pressed text.
Source V. Hartikainen
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
This is the remix of "polka dot seamless pattern".The image depicts polka dot seamless pattern.
Source Yamachem
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
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
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
The image depicts a Japanese Edo pattern called "kanoko or 鹿の子" meaning "fawn" which has a fur with small white spots.
Source Yamachem
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
The image is a seamless pattern of a fishnet.
Source Yamachem
Prismatic Geometric Pattern Background 2
Source GDJ