Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
A classic dark tile for a bit of vintage darkness.
Source Listvetra
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Green Web Background, Seamless tile.
Source V. Hartikainen
Prismatic Geometric Pattern Background No Black
Source GDJ
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
ZeroCC tileabel stone granite texture, edited from pixabay. CC0
Source Sojan Janso
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen