Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The classic notebook paper with horizontal stripes.
Source Are Sundnes
From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
The image depicts a seamless pattern of Japanese Edo pattern called "kikkou-matsu" or "亀甲松" meaning " tortoiseshell-pinetree".The real pinetree is like this: https://jp.pinterest.com/pin/500744052301065077/
Source Yamachem
Prismatic Abstract Background Design No Black
Source GDJ
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
This could be a hippy vintage wallpaper.
Source Tileable Patterns
Textured 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
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
CC0 remixed from a drawing. Walter Crane, 1914, Firkin.
Source SliverKnight
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Old China with a modern twist, take two.
Source Adam Charlts
Seamless Olive Green Web Background Image
Source V. Hartikainen
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Just like your old suit, all striped and smooth.
Source Alex Berkowitz