The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0
Source Sojan Janso
A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
This could be a hippy vintage wallpaper.
Source Tileable Patterns
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Continuing the geometric trend, here is one more.
Source Mike Warner
You know you love wood patterns, so here’s one more.
Source Richard Tabor
A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
Sometimes you just need the simplest thing.
Source Fabricio
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Looks like an old wall. I guess that’s it then?
Source Viahorizon
White little knobs, coming in at 10x10px. Sweet!
Source Amos
Here's a new background image for websites with a seamless pink texture. It should look beautiful with website themes where light pink background is needed. The background is seamless, therefore it should be used as a tiled background.
Source V. Hartikainen