Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using 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
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
"Beige Stone", Tileable Texture.
Source V. Hartikainen
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
You guessed it – looks a bit like cloth.
Source Peax Webdesign
8 by 8 pixels, and just what the title says.
Source pixilated
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
Alternative colour scheme for the original floral pattern.
Source Firkin