Here are some of the cheats I know.
Unlock stuff by talking to the owner and the employies Alot!When you unlock the dice get it!, because if you put a hamster in the cage with the dice you earn stars (money) every time the hamster throws it . You could leave it on over night with the charger plugged in. When you wake up you will be rich! There is also the birth day cake if you have it purcase a new hamster when the new hamster is in the cage put the birthday cake in because when you do you get 800 stars! But Make sure you REMOVE it before the hamster EATS IT!Continue and be as rich as you like!
Hope this helps