I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
A seamless background texture of old cardboard.
Source V. Hartikainen
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A seamless light gray paper texture with horizontal double lines.
Source V. Hartikainen
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Seamless Green Tile Background
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
Green Web Background, Seamless tile.
Source V. Hartikainen
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek
From a drawing in 'An Old Maid's Love. A Dutch tale told in English', Maarten Maartens, 1891.
Source Firkin