Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
Prismatic Floral Background No Black
Source GDJ
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Retro Circles Background 7 No Black
Source GDJ
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Colored maple leaves scattered on a surface. This is tileable, so it can be used as a background or wallpaper.
Source Eady
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso