Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
White circles connecting on a light gray background.
Source Mark Collins
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
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
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A cute x, if you need that sort of thing.
Source Juan Scrocchi
ZeroCC tileabel stone granite texture, edited from pixabay. CC0
Source Sojan Janso
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen