Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
Zero CC tileable grass texture, photographed and made by me. CC0
Source Sojan Janso
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Fix and cc0 to get the tile this is based on.
Source SliverKnight
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Background formed from the original with an emboss effect.
Source Firkin
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
A pale orange background pattern with glossy groove stripes.
Source V. Hartikainen
A seamless web texture of "green stone".
Source V. Hartikainen
The image depicts polka dot seamless pattern.
Source Yamachem
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Prismatic Hexagonalism Pattern No Background
Source GDJ
The image depicts meshed silhouettes of various things.The original image is an OCAL clipart called "Enter FOSSASIA 2016 #IoT T-shirt Design Contest" uploaded by "openclipart".Thanks.
Source Yamachem
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
From a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
Geometric triangles seem to be quite hot these days.
Source Pixeden
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin