Great Way to earn Bells WITHOUT CODES!
You need a second memory card for this to work....
1. Create a spare town on your second memory card
2. Make sure this town has a different fruit than your current main town.
3. Take an arm load of fruit from 2nd town back to your main town and plant it.
4. If you did this correctly you will have many mant new trees in a couple of days.
If you fill your pockets up with forign fruit you can sell it to tom nook for 7,500 bells! Repeat this untill you are out of fruit.