The starting point for this was drawn on the web site steamcoded.org/PolyskelionMaker.svg
Source Firkin
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
A free tileable background colored in off-white (antique white) color.
Source V. Hartikainen
From a drawing in 'Less Black than we're painted', James Payn, 1884.
Source Firkin
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A free seamless texture of reptile skin colored in a dark brown color. As always, you may use it as a repeated background image in your web design works, or for any other purposes.
Source V. Hartikainen
Zero CC tileable hard cover cells, skin like, book texture. 4K, Scanned and made by me CC0
Source Sojan Janso
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
This is a remix of "geometrical pattern 01".
Source Yamachem
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Geometric triangles seem to be quite hot these days.
Source Pixeden
Remixed from a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Colored maple leaves scattered on a surface. This is tileable, so it can be used as a background or wallpaper.
Source Eady
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ