Rings
You see a ring all day long. Not in a mirror: on your own hand, holding a steering wheel, reaching for a glass, signing a paper. It's the only piece of jewelry you look at more often than others do.
So you might as well put something meaningful on it. A child's first name. Two initials that no one else can read. A date you don't want to let slip away.
Each ring goes to engraving after your order, never before, and arrives in its box. What's written on it is for your eyes only.