A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin