ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
Background pattern made in "Grunge-Like" style. Available in both SVG and JPG formats. Edit to your needs then click the download button.
Source V. Hartikainen
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Number five from the same submitter, makes my job easy.
Source Dima Shiper
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
Kaleidoscope Prismatic Abstract No Background
Source GDJ
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Black And White Floral Pattern Background Inverse
Source GDJ
Remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo