You're right about being able to label a USB drive so I can read it. My solution, right or wrong is to cut some strips of paper about the same size as a #10 envelope. I put one in the manual feed slot portrait orientation of the printer and type what I want again portrait orientation. Libre Office makes this pretty easy, select the appropriate paper size and portrait orientation. Minimum paper size is a function of the printer. Print it out using a small type face, cut off the strip, trim it to size and tape it in place with clear tape. I don't do this often enough to be worth looking for a more efficient system.