From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
A free background image with a seamless texture of cardboard. This texture of cardboard looks quite realistic, especially when is actually tiled.
Source V. Hartikainen
CC0 and seamless wellington boot pattern.
Source SliverKnight
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
Prismatic Hexagonalist Pattern No Background
Source GDJ
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Sharp pixel pattern, just like the good old days.
Source Paridhi