Hexagonal pattern (colour) #2378
Yellow CC 0A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
More Textures
crissXcross@2X #112
Dark CC BY-SA 3.0Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Prismatic Rounded Squares Grid 3 No Background #489
Noise CC 0Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Background pattern 198 #2510
Yellow CC 0A version without colours blended together to give a different look.
Source Firkin
Page ornament #1988
Dark CC 0From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Prismatic Abstract Geometric Background 5@2X #793
Noise CC 0Prismatic Abstract Geometric Background 5
Source GDJ
edo pattern-samekomon #2271
Dark CC 0The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.
Source Yamachem
Yellow Wood Planks Background #876
Wood CC BY-SA 3.0This background pattern contains a texture of yellow wood planks. I think it looks quite original.
Source V. Hartikainen
Black Scales #191
Dark CC BY-SA 3.0Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Spiral pattern 3 #1934
Dark CC 0From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.
Source Firkin
Polonez Pattern #334
Gray CC BY-SA 3.0A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Fabric pattern 2 (colour 2) #2395
Fabric CC 0Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Fence 6 #2575
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin