“The piggy bank itself is alive and randomly gets sad when is moved or when it senses that somebody is around. It calls your attention and to make it feel better, its owner has to feed it with a small random amount of money that will be taken from the credit card.
The idea is that the owner has to take care of it, but at the same time, it saves money in a separate savings account. This way it still keeps the “surprise factor” because you don’t know how much you have saved.”
More at zenoza.com, portfolio of Jordi Parra. No family of Piet Parra as far as I know.