One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Psychedelic Geometric Background No Black
Source GDJ
Kaleidoscope Prismatic Abstract No Background
Source GDJ
Prismatic Groovy Concentric Background 4
Source GDJ
Seamless Prismatic Geometric Pattern With Background
Source GDJ
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
Zero CC tileable moss or lichen covered stone texture, edited from pixabay. CC0
Source Sojan Janso
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background
Source GDJ
A seamless pattern formed from a square tile based on a jpg on Pixabay. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin