https://coolbackgrounds.io/ by @moeamaya presents a collection customized backgrounds. Worth to check and to use in one of your projects!
https://coolbackgrounds.io/images/background-wallpapers-21a60347.png
Cool Backgrounds is a collection of tools to create compelling, colorful images for blogs, social media, and websites. Beyond backgrounds, the images generated can be used as 
desktop wallpapers or cropped for 
mobile wallpapers.
https://coolbackgrounds.io/images/backgrounds/sea-edge-311c5cd5.png
https://coolbackgrounds.io/images/backgrounds/compute-83062381.png
https://coolbackgrounds.io/images/backgrounds/disco-75c0c1ef.png
