Background pattern brown #1945
Brown CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
More Textures
Use Your Illusion #917
Dark CC BY-SA 3.0A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
White Bed Sheet #821
Light CC BY-SA 3.0Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
Gray Textile Background #1168
Fabric CC BY-SA 3.0A gray background pattern with a texture of textile. Suits perfectly for web design.
Source V. Hartikainen
Felt #300
Wall CC BY-SA 3.0Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
Tessellation 15 (colour 3) #2220
Red CC 0The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Prismatic Abstract Geometric Background 2 No Black #445
Noise CC 0Prismatic Abstract Geometric Background 2 No Black
Source GDJ
Prismatic Polka Dots Mark II 3 No Background #534
Noise CC 0Prismatic Polka Dots Mark II 3 No Background
Source GDJ
Satin Weave@2X #1045
Light CC BY-SA 3.0Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Prismatic Abstract Geometric Background 4 #271
Noise CC 0Prismatic Abstract Geometric Background 4
Source GDJ
Paper 3@2X #32
Paper CC BY-SA 3.0Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
Low Contrast Linen #863
Dark CC BY-SA 3.0A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
Background pattern 227 (colour 2) #2313
Blue CC 0A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin