Animal Crossing: Wild World - DS/Cheats

From WikiCheats

Magic Money Rock

Hit all of the rocks in the town with either a shovel or axe until one releases a money bag. Keep hitting the rock and it will release more money bags. Repeat this until it stops. The more you hit the rock, the more gold that will be released. This can only be done once per day.

Get Tan

During summer stay outside for a few minutes. Once you enter a building you will notice that your skin tone is now a little bit darker. The tan will disappear after about a week, unless you keep going outside. The darkness of your tan depends on how long and how much you go outside.