Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
This could be a hippy vintage wallpaper.
Source Tileable Patterns
A seamless background pattern with a texture of wood planks. This wood background pattern has vertically arranged planks. You may try to rotate it 90°, to see how it will look like when the wood planks are arranged horizontally.
Source V. Hartikainen
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
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
This is a hot one. Small, sharp and unique.
Source GraphicsWall
The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
White little knobs, coming in at 10x10px. Sweet!
Source Amos
A nice and simple white rotated tile pattern.
Source Another One
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
This is the remix of "Colorful Floral Pattern Background 3" uploaded by "GDJ". Thanks.
Source Yamachem
Someone was asking about how to achieve a fur pattern at #inkscape irc so tried to make a filter on it. Flood filled fractal noises rigged together. May someone find a good use for these.
Source Lazur URH
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
A nice looking light gray background pattern with diagonal stripes.
Source V. Hartikainen
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
A lot of people like the icon patterns, so here’s one for your restaurant blog.
Source Andrijana Jarnjak