A cereal box, construction paper and markers turn into a bank with kix cereal.
Good for ages 6 and up.
Get the instructions here:
http://www.kixcereal.com/diy-cereal-box-piggy-banks/
Get the instructions here:
http://easypreschoolcraft.blogspot.com/2014/02/recycled-milk-carton-rolling-coin-bank.html