Is the Piggy Bank sacred?

If Jew's are considered the most financially savvy race and pork is not kosher why do we have piggy banks? Do Jews have piggy banks?
It's one of those "When in Rome do as the Roman's do" type scenarios. If you want to learn from the best you need to mimic their behaviours. It seems this could be a key on how Jews teach their children about saving and budgeting. Maybe there's a lesson for us all here?
Maybe they just have a little jar or tin to stash the coins that accumulate in their pockets and wallets? It could be a simple as that. Perhaps, they don't need to save. Maybe they're just so financially savvy that they don't actually have time to put their loose change into anything at all? Who knows? Who cares?
If you've ever wondered where the piggy bank idea came from take a moment to read this article.

