This could be a hippy vintage wallpaper.
Source Tileable Patterns
From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
Someone was asking about how to achieve a fur pattern at #inkscape irc so tried to make a filter on it. Flood filled fractal noises rigged together. May someone find a good use for these.
Source Lazur URH
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
The image depicts polka dot seamless pattern.
Source Yamachem
Here's a tile-able wood background image for use in web design.
Source V. Hartikainen
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
Clover with background for St. Patrick's Day. Add to a card with a doily, ribbon, a leprechaun or other embellishments.
Source BAJ
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
This is a seamless pattern of regular hexagon which has a honeycomb structure.
Source Yamachem
Prismatic Groovy Concentric Background 3
Source GDJ
Alternative colour scheme to the original.
Source Firkin
An alternative colour scheme to the original seamless pattern.
Source Firkin
Colorful Floral Background 3 No Black
Source GDJ
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
Colour version of the original pattern.
Source Firkin
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0
Source Sojan Janso
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin