A free tileable background colored in off-white (antique white) color.
Source V. Hartikainen
Prismatic Abstract Geometric Background 5
Source GDJ
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
This background pattern has futuristic look. So, maybe it could be used on websites or blogs dedicated to video games?!
Source V. Hartikainen
Prismatic Polka Dots 3 No Background
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Floral Background No Black
Source GDJ
Abstract Tiled Background Extended 10
Source GDJ
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Prismatic Basic Pattern 2 No Background
Source GDJ
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa