This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Original minus the background
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Here's a camo print with more tan and less green, such as might be used in a desert scenario. This is tileable, so it can be used as a wallpaper or background.
Source Eady
Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Alternative colour scheme for the original floral pattern.
Source Firkin
Fix and cc0 to get the tile this is based on.
Source SliverKnight
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
A free web background image with a seamless concrete-like texture and an Indian-red color.
Source V. Hartikainen
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
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
Here's an yet another seamless note paper texture for use as a background on websites.
Source V. Hartikainen
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock