A friend of mine is a commercial artist. I remember years ago working with a dry transfer called "presstype." I bet that this is now available for computer printers. Presstype was self-adhesive and I used it to replace the letters and numbers on the dashboard controls of my XK-140 Jag. (In the 70s, you could buy one for $800! Baltimore was the port of entry for Jags, Healeys, Triumphs, MGs, and Rileys, and if I had any sense, I could have kept mine in the driveway and died rich.)