Zig-zag pattern 3 #2416
Grid CC 0A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
More Textures
Background pattern 234 (colour 3) #2257
Blue CC 0Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Decorative divider 287 #1821
Dark CC 0From a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Prismatic Polka Dots Mark II No Background #530
Noise CC 0Prismatic Polka Dots Mark II No Background
Source GDJ
Little Triangles #687
Light CC BY-SA 3.0The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
Prismatic Isometric Cube Extra Pattern No Background@2X #789
Light CC 0Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
Wellington boots pattern #1900
Colorful CC 0CC0 and seamless wellington boot pattern.
Source SliverKnight
Medic Packaging Foil@2X #377
Light CC BY-SA 3.08 by 8 pixels, and just what the title says.
Source pixilated
Background pattern 208 (colour 2) #2462
Grid CC 0A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
WaveCut@2X #76
Light CC BY-SA 3.0If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Dark Brown Wood Pattern #884
Wood CC BY-SA 3.0A seamless background pattern of dark brown wood planks.
Source V. Hartikainen
Colorful Floral Background 3 No Black@2X #486
Light CC 0Colorful Floral Background 3 No Black
Source GDJ
Noisy Net #976
Dark CC BY-SA 3.0Little x’es, noise and all the stuff you like. Dark like a Monday, with a hint of blue.
Source Tom McArdle
Vaio@2X #676
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
Background pattern 215 (colour 4) #2368
Green CC 0A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Part of Bayeux Tapestry 4 #2446
Noise CC 0From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin