Based on my search until now, AdminLTE seems to be the most popular way of doing it among most devs although a few others like material and coreui are also solid names. Source: over 1 year ago

You could have a look at AdminLTE (https://adminlte.io/). - Source: Hacker News / almost 2 years ago

AdminLTE - This is by far my favorite because their open source version is "truly" open source, because they don't hold back stuff like calendar and chart plugins to lure you to the pro version. While they do have some premium templates, it's mostly custom styling on top of the base version, not any extra features. - Source: dev.to / about 2 years ago

Looks interesting, thanks for this. Link for anyone borderline curious: https://adminlte.io/. Source: about 2 years ago

I’ll show you how to assign and change the role lists for the users, selecting them by context, and I will also show you how to expand this application’s functionality. You know how to apply your work as an administrator and developer to the new features of the well-proven apptools software complex. With the addition of an adminLTE template, you can now quickly and easily create interface interactions for any... - Source: dev.to / over 2 years ago

Pattern Monster: A simple online pattern generator to create repeatable SVG patterns. Perfect for website backgrounds, apparel, branding, packaging design and more. - Source: dev.to / 26 days ago

SVG Patterns (if it counts as illustration:) https://pattern.monster/. Source: about 1 year ago

For the back of the card I'll use and SVG pattern, feel free to use the one you like the most from Pattern Monster. Also center the background image with background-position, and make it cover the full card by adding background-size: cover;. - Source: dev.to / over 1 year ago

I'd like to put together a POC to show some possible solutions. I know there are some tools out there such as https://pattern.monster/ and https://haikei.app/ which can generate images, but ideally this would be a library or at least an API I can hook into, so admins can just create templates in our admin application without having to go to an external site and manually knock a thumbnail up. Although not required,... Source: over 1 year ago

Bonus points for adding a custom background - pattern.monster is a must-use, in my personal, humble opinion. Source: almost 2 years ago