If you don’t like cream and pixels, you’re in the wrong place.
Source Mizanur Rahman
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
This one is amazing, truly original. Go use it!
Source Viahorizon
Prismatic Curved Diamond Pattern No Background
Source GDJ
Seamless Green Tile Background
Source V. Hartikainen
Embossed lines and squares with subtle highlights.
Source Alex Parker
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Prismatic Abstract Background Design
Source GDJ
Prismatic Abstract Geometric Background 2
Source GDJ
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Inspired by a drawing seen in 'City of Liverpool', James Picton, 1883.
Source Firkin
Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
A free green background pattern with a pattern of rhombuses on a seamless texture. Feel free to use it as a tiled background image on your web site.
Source V. Hartikainen
A colourful background drawn originally in paint.net and vectorised in Vector Magic.
Source Firkin
Colour version of the original pattern inspired by the front cover of 'Old and New Paris', Henry Edwards, 1894.
Source Firkin
Looks like an old wall. I guess that’s it then?
Source Viahorizon
Colored maple leaves scattered on a surface. This is tileable, so it can be used as a background or wallpaper.
Source Eady