When you love someone, they can be a lot of things.
They can be all of these things or they can be one or a couple in particular (circle them with a black sharpie, it'll look really cool).
But tell them.
Tell them you find refuge in them, you find wise counsel in them, you find a comrade and champion and confidant in them.
Each card is 3.5" x 4.9", printed on thick, chipboard stock and tucked into a classic airmail envelope, a timeliness token of a bygone era.