Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
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
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
Very simple, very blu(e). Subtle and nice.
Source Seb Jachec
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
The classic notebook paper with horizontal stripes.
Source Are Sundnes