Inspired by a font I saw in a children's book. The artist had drawn a map of the world on canvas and used a tiny serif font to label important points on the map. The letters had such a cute hand-made feel to them that I just had to recreate it in FS.
Uppercase letters are 6 grid squares (3 bricks) tall; lowercase are 4.5 (2.25 bricks). IIRC nudging had recently been introduced; this definitely would have been impossible without it.