For the kids' Valentines this year, I emptied out four bajillion matches, and covered match boxes with scrapbook paper (spray adhesive - don't love using it, but it is just the best for this kind of thing!) Then I had the girls decorate little strips of white paper and glued it on the boxes, filled them with M&Ms, and - voila! I got the idea from here.
The teacher Valentines are large match boxes filled with Ferrero Rocher.
Have a happy ♥ day!