Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
Prismatic Abstract Background Design
Source GDJ
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Heavily remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Remixed from a PNG that was uploaded to Pixabay by gingertea
Source Firkin
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ