Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0
Source Sojan Janso
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Lovely pattern with splattered vintage speckles.
Source David Pomfret
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Pattern formed from simple shapes. Black version.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
A new one called white wall, not by me this time.
Source Yuji Honzawa
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857
Source Firkin