Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Prismatic Abstract Background Design No Black
Source GDJ
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
Zero CC asphalt, pavement, texture, photographed and made by me. CC0 WARNING I FOUND A SEAM ON THIS TEXTURE
Source Sojan Janso
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
Embossed lines and squares with subtle highlights.
Source Alex Parker
A seamless background pattern with impressed gray dots.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
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
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib