One-word ideas are probably the personal favorite of most couples. These are simple and make you feel special with a single word. You can engrave the word by which you call each other, like a nickname or shared last name, on your 3mm wedding band. You can make it a bit more personalized by adding your wedding date beside your chosen word or name.
Nowadays, it has become a trend to engrave your favorite line from a movie or your favorite part of the song in the wedding band. The movie or song or anything else should be a personal favorite of the couple. You can choose to engrave a part of that song that you played while proposing to your partner. This will remind you of your special moment whenever you look at your band.