I use a battery-operated labeler by “Brother” to label my folders.

I use a simple black font against a white ½ inch (12mm) wide label tape. The labeler takes four AAA batteries. The interface is intuitive and the buttons are big enough to use even when tired.

Advantages? Compared to handwriting directly on the tab, I can find the right folder much quicker. That’s because the clean, crisp font allows me to scan a greater number folders at a time. The tight font also allows me to pack in longer descriptive phrases into the same tab space. That gives me more flexibility on how to organize my filing cabinet, so I can do grouping of folders by project instead of strict alphabetization.