Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Geometric triangles seem to be quite hot these days.
Source Pixeden
A seamless pattern formed from miutopia's cakes on a tablecloth.
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
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
This is a remix of "geometrical pattern 01".
Source Yamachem
This one needs to be used in small areas; you can see it repeat.
Source Luca
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
From a drawing in 'Hundert Jahre in Wort und Bild', S. Stefan, 1899.
Source Firkin
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
The image depicts a pattern of regular hexagon.As I made to use it for myself,I want to others to use it.Speaking about the ratio of the image, height : width = 2 : √3(1.732...)Ridiculous to say,I realized later that this image is not honey comb pattern.I have to slide the second row.
Source Yamachem
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
From a drawing in 'Jardyne's Wife', Charles Wills, 1891.
Source Firkin
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Used correctly, this could be nice. Used in a bad way, all hell will break loose.
Source Atle Mo
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.
Source V. Hartikainen