I hand-painted these little Eeveelution faces onto pieces of paper, cut them up (to the exact size of the scrabble letter), then attached them on.

I then scanned the paintings so I could make lots more of the same image, and I've been selling these at cons. :3 Espeon is the most popular.
Scrabble charms made with greeting card bits, scrabble letters, acrylic tops, and small metal bails.