Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
Prismatic Snowflakes Pattern No Background
Source GDJ
Prismatic Groovy Concentric Background No Black
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
Alternative colour scheme to the original.
Source Firkin
CC0 and seamless wellington boot pattern.
Source SliverKnight
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Prismatic Abstract Background Design
Source GDJ