Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Colorful Floral Background 3 No Black
Source GDJ
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
The tile this is based on was adapted from an image that was uploaded to Pixabay by frolicsomepl. It can be had in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857
Source Firkin
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
Green Web Background, Seamless tile.
Source V. Hartikainen
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Might not be super subtle, but quite original in its form.
Source Alex Smith