This could be a hippy vintage wallpaper.
Source Tileable Patterns
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
Background formed from the original with an emboss effect
Source GDJ
Embossed lines and squares with subtle highlights.
Source Alex Parker
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
Black paper texture, based on two different images.
Source Atle Mo
Based from Design Kindle
Remixed from a JPG that was uploaded to Pixabay by susanlu4esm
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A free seamless background texture that looks like a brown stone wall.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
Prismatic Hypnotic Pattern No Background
Source GDJ
Prismatic Abstract Background Design No Black
Source GDJ
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
A repeating background of beige paper with vintage look. Repeats to infinity, as usual.
Source V. Hartikainen
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
Zero CC tileable ground cracked, crackled, texture, made by me.
Source Sojan Janso
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH