A repeating background with wood/straw like texture.
Source V. Hartikainen
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Run a restaurant blog? Here you go. Done.
Source Andrijana Jarnjak
Prismatic Abstract Line Art Pattern Background
Source GDJ
Remixed from a PNG that was uploaded to Pixabay by gingertea
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Here's a repeatable texture that resembles a light green concrete wall or something similar.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Derived from a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
The image depicts a seamless pattern which includes hexagonally-aligned gourds with BG in light-brown.
Source Yamachem
Might not be super subtle, but quite original in its form.
Source Alex Smith
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Sharp pixel pattern, just like the good old days.
Source Paridhi