https://codepen.io/noahraskin/pen/dyWxaLg
https://www.remove.bg/
https://freefrontend.com/css-background-patterns/
https://codepen.io/robinrendle/pen/LmzLEL
https://freefrontend.com/css-particle-backgrounds/
https://freedesignresources.net/natural-vector-texture-free-sample/
https://www.epicpxls.com/items/glitch-texture-backgrounds
https://imgbin.com/
http://freegoodiesfordesigners.blogspot.com/2015/04/15-free-fresh-colorful-patterns.html
http://briangonzalez.github.io/jquery.adaptive-backgrounds.js/
https://coolbackgrounds.io
https://codepen.io/quasimondo/pen/lDdrF
http://codepen.io/meodai/pen/jVpwbP
