Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Original seamless pattern with an Inkscape filter.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Here I have tried to create something that would look like maple wood. Not sure how well it's turned out, but at least it looks like wood.
Source V. Hartikainen
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Number five from the same submitter, makes my job easy.
Source Dima Shiper
From a drawing in 'Worsborough; its historical associations and rural attractions', Joseph Wilkinson, 1879.
Source Firkin
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
This is the remix of an OCAL clipart called "Rain on Window" uploaded by "pagarmidna".Thanks.This is a seamless pattern of raindrops.
Source Yamachem
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Honestly, who does not like a little pipe and mustache?
Source Luca Errico