One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Prismatic Snowflakes Pattern No Background
Source GDJ
Embossed lines and squares with subtle highlights.
Source Alex Parker
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
The original enhanced with some gradients.
Source Firkin
Greyscale version of a pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
A seamless texture of worn out "cardboard".
Source V. Hartikainen
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
This could be a hippy vintage wallpaper.
Source Tileable Patterns
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green