You would be limited to a fairly small subset of emojis, anyway: many (most?) of them are outside of the BMP so don’t fit into a single UTF-16 code unit, and some of the remaining ones are ordinary characters followed by an emoji style selector (U+FE0F), which doesn’t fit either.

Whenever I get onto a computer that someone left unlocked, the first thing I check is their eggplant- and peach-labelled drives.

With the right code pages, you should be able to find a few smiley faces.

For everything else, the best advice I can offer is that you can put your own autorun config file on the root of a drive to point the drive icon to a different resource. Though the path will stay boring, the GUI will show emoji everywhere, especially if you also enter emoji in the drive label.

But your computer name can be emoji.