Background pattern 269 #2062
Dark CC 0A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
More Textures
Light Gray@2X #1204
Gray CC BY-SA 3.0Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
45-Degree Fabric #1
Fabric CC BY-SA 3.0Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Sand #1364
Unknow CC 0Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Wall #1241
Stone CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Carbon Fiber@2X #4
Carbon CC BY-SA 3.0A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
Light Paper Fibers #835
Paper CC BY-SA 3.0More in the paper realm, this time with fibers.
Source Jorge Fuentes
Circles@2X #186
Light CC BY-SA 3.0One more sharp little tile for you. Subtle circles this time.
Source Blunia
Green Cup #1211
Unknow CC BY-SA 3.0I scanned a paper coffee cup. You know, in case you need it.
Source Atle Mo
Vintage Speckles@2X #654
Wall CC BY-SA 3.0Lovely pattern with splattered vintage speckles.
Source David Pomfret
Cover Green #1283
Dark CC 0Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
Translucent Fibres #943
Light CC BY-SA 3.0The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
Sports car pattern 2 #2441
Colorful CC 0A seamless pattern formed from a sports car on clker.com. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Wavy background #2020
Green CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight