These ICONs can be used with HyperCard, and that wonderful INIT, Façade. (I'm tired of Calvin and Hobbes, frankly.)
If you like them, please go buy his books, "Love is Hell," "Work is Hell," "School is Hell," and "Childhood is Hell." They're a hoot. Cartoonists have to make a living.
These ICONs are inspired by Matt Groening's characters in his books about Life in Hell.