Textured Red Brown Plastic #878
Wood CC BY-SA 3.0Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
More Textures
Prismatic Geometric Tessellation Pattern 2 No Background #553
Noise CC 0Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
Checkered Light Emboss@2X #281
Grid CC BY-SA 3.0Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Prismatic Floral Background No Black #475
Light CC 0Prismatic Floral Background No Black
Source GDJ
Green Gobbler #85
Dark CC BY-SA 3.0Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
Background pattern 236 #2249
Dark CC 0Seamless pattern the basic tile for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Brushed Alum #67
Light CC BY-SA 3.0A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Paper 3 #31
Paper CC BY-SA 3.0Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
Decorative divider 206 #2380
Dark CC 0Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
Old Cardboard, Background Texture #1213
Cardboard CC BY-SA 3.0A seamless background texture of old cardboard.
Source V. Hartikainen
Abstract Paper-Like Background With Colorful Stains #1226
Yellow CC BY-SA 3.0An abstract pale yellow paper-like background with stains colored in yellow and green.
Source V. Hartikainen
Blue Stripes Pattern #969
Stripes CC BY-SA 3.0A textured blue background pattern with vertical stripes.
Source V. Hartikainen
Background pattern 252 (colour 4) #2159
Light CC 0Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
60º lines #25
Light CC BY-SA 3.0Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Floral design 98 (colour) #1781
Green CC 0From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Background pattern 308 #1872
Yellow CC 0Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Background pattern 235 #2255
Yellow CC 0To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Connected #348
Light CC BY-SA 3.0White circles connecting on a light gray background.
Source Mark Collins
Gold Wall & Dark #1250
Wall CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Rough Fabric Pattern (Dark Brown) #1166
Fabric CC BY-SA 3.0A background pattern with a look of rough fabric.
Source V. Hartikainen
Circular frame 25 #1712
Dark CC 0Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
Climpek@2X #776
Grid CC BY-SA 3.0Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Background pattern 302 #1894
Red CC 0The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin