Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
Use shift+alt+i on the selected rectangle in Inkscape to get the tile this is based on
Source Firkin
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
A new take on the black linen pattern. Softer this time.
Source Atle Mo
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
This one needs to be used in small areas; you can see it repeat.
Source Luca
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
You may use it as is, or modify it as you like.
Source V. Hartikainen
A comeback for you: the popular Escheresque, now in black.
Source Patten
This is the remix of an Openclipart clipart called "Maze" uploaded by "any_ono_mous".Thanks.This is a seamless pattern of a maze.
Source Yamachem
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward