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
Clover with background for St. Patrick's Day. Add to a card with a doily, ribbon, a leprechaun or other embellishments.
Source BAJ
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
A new one called white wall, not by me this time.
Source Yuji Honzawa
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Same classic 45-degree pattern, dark version.
Source Luke McDonald
Black paper texture, based on two different images.
Source Atle Mo
Based from Design Kindle
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This is a grid, only it’s noisy. You know. Reminds you of those printed grids you draw on.
Source Vectorpile
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
The image depicts polka dot seamless pattern.
Source Yamachem
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Prismatic Abstract Geometric Background 4
Source GDJ
Sometimes you just need the simplest thing.
Source Fabricio
Original seamless pattern with an Inkscape filter.
Source Firkin
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
Prismatic Geometric Pattern Background
Source GDJ
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
Formed from decorative divider 184 in paint.net. Vectorised with Vector Magic.
Source Firkin
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen