From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
Retro Circles Background 5 No Black
Source GDJ
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Orange-red pattern for tiled backgrounds.
Source V. Hartikainen
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
From a drawing in 'Jardyne's Wife', Charles Wills, 1891.
Source Firkin
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
Zero CC Mossy stone tileable texture, photographed and made by me. CC0
Source Sojan Janso
Black And White Floral Pattern Background from PDP.
Source GDJ
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Seamless pattern made from a tile that can be obtained in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
The name Paisley reminds me of an old British servant. That’s just me.
Source Swetha
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Sometimes you just need the simplest thing.
Source Fabricio
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Number five from the same submitter, makes my job easy.
Source Dima Shiper
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Remixed from a drawing in 'An Index to Deering's Nottinghamia Vetus et Nova', Rupert Chicken, 1899. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee