I use Lucid every day in my job and it’s an essential part of helping me to explain projects and processes to clients. However I also use it for small personal projects.
Although that may seem ‘frivolous’, I actually find that it enables me to really refine HOW i use the platform and supports me in making designs and diagrams much more quickly. If I was to do that just on ‘work’ projects, it would be under a lot more pressure.
So I suggest you pick something you’re interested in and create something visual that helps you to explain it to someone else. You’ll definitely find that it helps you when creating work projects.
