This ons is quite old school looking. Retro, even. I like it.
Source Arno Declercq
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Prismatic Polka Dots 3 No Background
Source GDJ
Black And White Floral Pattern Background from PDP.
Source GDJ
Colourful background achieved with gradient fills.
Source Firkin
Prismatic Abstract Geometric Background 4
Source GDJ
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
Sometimes you just need the simplest thing.
Source Fabricio
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin
I scanned a paper coffee cup. You know, in case you need it.
Source Atle Mo
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ