To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Colorful Floral Background No Black
Source GDJ
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Continuing the geometric trend, here is one more.
Source Mike Warner
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Alternative colour scheme for the original floral pattern.
Source Firkin
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Black brick wall pattern. Brick your site up!
Source Alex Parker
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
A seamless texture of worn out "cardboard".
Source V. Hartikainen
Retro Circles Background 4 No Black
Source GDJ
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
I’m not going to lie – if you submit something with the words Norwegian and Rose in it, it’s likely I’ll publish it.
Source Fredrik Scheide
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo