First plugin. What will I build? (Not promoting)

I've worked in the WordPress space for many years, and recently I've been upskilling and getting into development. I'm really enjoying it, and I've set myself the challenge of trying to get a free plugin listed on .org by the end of the year.

I'm not doing this for profit, just practice and to learn something new. I want to figure out how it all works, and see if I can actually achieve this goal.

The technical side of things I'm fairly confident with, but my challenge now is inspiration. Every idea I have, someone (usually many someones) has already done it.

I know I won't get thousands of installs even with the best idea - but I would like to build something that a few people actually use!

What is one simple feature or functionality that you would like to add to your site that you currently can't find the perfect fit for? I'll start coding the best idea on Monday.