This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Derived from a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
Formed from decorative divider 184 in paint.net. Vectorised with Vector Magic.
Source Firkin
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall