A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
A nice and simple white rotated tile pattern.
Source Another One
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
A black tile-able background with paper-like texture.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A seamless design of flowers remixed from a jpg on Pixabay by Prawny.
Source Firkin
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
From an image on opengameart.org shared by rubberduck.
Source Firkin
A background pattern with wavy green vertical stripes. This one has green stripes on a white background. Download if you like it.
Source V. Hartikainen
A comeback for you: the popular Escheresque, now in black.
Source Patten
From a drawing in 'An Old Maid's Love. A Dutch tale told in English', Maarten Maartens, 1891.
Source Firkin
Prismatic Polka Dots Mark II No Background
Source GDJ
Prismatic Hypnotic Pattern No Background
Source GDJ
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa