A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'An Old Maid's Love. A Dutch tale told in English', Maarten Maartens, 1891.
Source Firkin
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Psychedelic Geometric Background No Black
Source GDJ
Just like the black maze, only in light gray. Duh.
Source Peax
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Geometric triangles seem to be quite hot these days.
Source Pixeden
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Seamless Prismatic Quadrilateral Line Art Pattern No Background
Source GDJ
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
A frame using leaves from an image that was uploaded to Pixabay by mayapujiati
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Black And White Floral Pattern Background Inverse
Source GDJ
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Prismatic Abstract Line Art Pattern Background
Source GDJ
A new one called white wall, not by me this time.
Source Yuji Honzawa
Sort of like the Photoshop transparent background, but better!
Source Alex Parker