The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
Just a nice looking textured pattern with faded blue stripes. Well, that's it for today... one background a day, as usual.
Source V. Hartikainen
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
A repeating background of thick textured paper. Actually, it turned out to look like something between a paper and fabric.
Source V. Hartikainen
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Prismatic Geometric Pattern Background
Source GDJ
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks.
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin