This is the remix of "blue wave-seigaiha".The image depicts a seamless pattern of the front upper part of Japanese five yen coin which is used currently.This design represents a rice with ripe golden ears.
Source Yamachem
Prismatic Curved Diamond Pattern No Background
Source GDJ
Square design drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Heavily remixed from a drawing in 'Barbara Leybourne; a story of eighty years ago', Sarah Hamer, 1889.
Source Firkin
Submitted by DomainsInfo – wtf, right? But hey, a free pattern.
Source DomainsInfo
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
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
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Prismatic Abstract Geometric Background 4
Source GDJ
A seamless marble-like texture colored in light blue.
Source V. Hartikainen
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin