Digital file?

EMERYBOARD

Think of a tool often found in a manicure kit that might sound like it belongs in a computer folder.

This clue plays on the idea of a "file" having two meanings—a digital document and a tool for smoothing nails. "Digital file" sounds like it should refer to something tech-related, but here it’s a trick: an emery board is a type of nail file. The misdirection makes you think of computers before realizing it’s a simple, everyday object with the same name.