Penrose pattern #1956
Colorful CC 0A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
More Textures
Floral design 100 (version 2, colour) #1772
Green CC 0From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Background pattern 234 (colour 3) #2257
Blue CC 0Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Seamless 3D Isometric Tessellation Pattern 2 #147
Light CC 0A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Cross Stripes@2X #48
Dark CC BY-SA 3.0Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Checkered Pattern@2X #323
Grid CC BY-SA 3.0Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Background pattern 339 (colour 2) #1707
Green CC 0The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Soft Kill@2X #319
Dark CC BY-SA 3.0Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Decorative divider 243 #2082
Dark CC 0From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Vaio #675
Diamond CC BY-SA 3.0I’m guessing this is related to the Sony Vaio? It’s a nice pattern no matter where it’s from.
Source Zigzain
Circles pattern #1917
Yellow CC 0Fix side and a seamless pattern formed from circles.
Source SliverKnight
Leafy pattern (colour) #2334
Fabric CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin