As simple as they may seem, there is a reason piggy banks have maintained their status as a kid and adult favorite throughout the years - not only are they incredibly adorable, they also teach little ones the value of money and saving. That's why we were so excited to see designer Kiri Martin take this iconic toy and create a sustainable version of it out of paper pulp. Named Bergdorf (perhaps an allusion to where young savers can spend their nesteggs if they accumulate enough cash), the paper piggy uses minimal materials and can be ripped apart and recycled when it's time for kids to retrieve their coins.