Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
You may use it as is, or modify it as you like.
Source V. Hartikainen
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
To get the repeating unit, 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
A seamless texture of worn out "cardboard".
Source V. Hartikainen
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
A nice and simple white rotated tile pattern.
Source Another One
Prismatic Rounded Squares Grid 3 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
Element of beach pattern with background.
Source Rones
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Might not be super subtle, but quite original in its form.
Source Alex Smith
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin