I read a review this week of a power bank that weighs less than my phone.

Not interesting in itself — but it made me notice something.

The tools that actually change how I work are never the impressive ones. They're the ones that remove a small, daily friction: the battery that means I stop planning my day around outlets, the note app that opens in under a second, the second SIM so mobile data is never a question.

Most "productivity" advice is about doing more. The stuff that sticks is about one less thing to think about.

What's the small tool that quietly did that for you?