From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
From a drawing in 'A Rolling Stone. A tale of wrongs and revenge', John Hartley, 1878.
Source Firkin
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Prismatic Abstract Geometric Background 5
Source GDJ
Zero CC tileable cork floor, photographed and made by me. CC0
Source Sojan Janso