The Well.
The Well that the Mari and Jowee play near is actually great for getting stuff. But the best thing is when you deposit 10 thousand Rapo Coins. (which I JUST DID) it's awesome, you get this new whole town. It is actually quite fun to play around in. If you haven't already, I recommend going there when you get the cash!
More tricks, tips and cheats for this game are right here - Drawn to Life: SpongeBob SquarePants Edition cheats
Comments for this hint