I like pins that look like real things. Check this out:
On the bottom is a box of soap I got when I stayed at the Disneyland Hotel many years ago. On the top is a pin that looks very much like that box of soap. That tickles my fancy!
I dunno why I like these kind of pins, but decades ago I used to draw carefully realistic pen-and-ink renderings of stuff like soy sauce bottles and glue containers, so common objects in art have always fascinated me.