Get loads of bells
Save the game and turn the power off. Go to your DS settings and select date. Turn it to 01.01.2000 save and quit. Go onto the game and select your character and check your mailbox. If you had at least 50.00 bells in your account you should get 99.99 bells of interest from the town hall. If you had less than that in the bank then you will get lower interest, but as you keep doing this it will get higher every time untill it gets to 99.99.
WARNING do this every TEN YEARS so next time you do it it will bee 01.01.2010 then 2020 and so on.
Added by: Guest Feb 19th 2012, ID#16722