Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
This is the remix of "plant pattern 02".I changed the object color to white and the BG to purple.The image a seamless pattern derived from a weed which I can't identify.The original weed image is from here:jp.pinterest.com/pin/500744052301423641/
Source Yamachem
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
A seamless canvas texture for using as background on websites. Colored in pale tones of brown.
Source V. Hartikainen
The image depicts meshed silhouettes of various things.The original image is an OCAL clipart called "Enter FOSSASIA 2016 #IoT T-shirt Design Contest" uploaded by "openclipart".Thanks.
Source Yamachem
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH