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You may have realized by now that putting money into the bank may not be the most effective way to save, and here to offer a simpler solution are these adorable Billegas Piggy Banks. Made from paper, these cute characters were designed by Santiago De Francisco and Alejandra Arce and are hungry for a very specific type of food.

Relatively uninterested in coins, the personified parcels crave cash in the form of notes -- what Colombians call 'billegas.' When their owner establishes a relationship with them, he is all the more likely to feed his little friend, thereby encouraging saving through more interactive means than online fund transfers.

Billegas Piggy Banks are packaged as distinctive personalities. Perhaps you'd prefer doting on a little lady than Batman -- whatever works for you.