This was formed by distorting an image of a background on Pixabay.
Source Firkin
A free seamless background with pink spots.
Source V. Hartikainen
Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Colorful Floral Background No Black
Source GDJ
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
A seamless canvas texture for using as background on websites. Colored in pale tones of brown.
Source V. Hartikainen
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A new one called white wall, not by me this time.
Source Yuji Honzawa
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Almost like little fish shells, or dragon skin.
Source Graphiste
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
A version without colours blended together to give a different look.
Source Firkin
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Zero CC tileable moss or lichen covered stone texture, edited from pixabay. CC0
Source Sojan Janso