Hints: Secrets

1. Wisp the ghost
To find the ghost, wait until Monday nights after all stores have closed and before 4:00 am, go to the south-east corner of your town and you will hear a voice. Follow the voice and Wisp will ask you to find his lamp for him. Go to the attic of your house and there it will be. If you do so, he will either give you a randomized gift, clear all your weeds, repaint your house, or clear your house of cockroaches.

2. St. Patrick's Day
Usually, the only thing for St. Patrick's day is a four-leaf clover and Lucky K.K.. But in City Folk you can get a leprechaun hat called the shamrock hat! Start your game with Lucky K.K. playing on March 17th, St. Patrick's Day, and Pelipper will be outside with a letter from Nintendo, saying that it should prevent pinching. It is possible it only happens through Wi-Fi Connection.

3. Money Rock
Just like in previous Animal Crossing games, there will be a random rock in your town each day that, when found, will give you increasing amounts of Bells. The more you hit it with your equipped shovel, the more Bells you will get. If you want to hit the rock more and more, try digging holes around the rock, thus giving yourself more room to hit the half-submerged rock.

4. Mario Items
These Mario Items can be found by shooting down balloons with a slingshot sold at Tom nooks store. (not all balloons contain Mario items)

1-Up Mushroom: Found in balloon presents
? Block: Found in balloon presents
Brick Block: Found in balloon presents
Brick flooring: Found in balloon presents
Cannon: Found in balloon presents
Coin: Found in balloon presents
Fire Bar: Found in balloon presents
Fire Flower: Found in balloon presents
Flagpole: Found in balloon presents
Green Koopa Shell: Found in balloon presents
Green Pipe: Found in balloon presents
Mushroom Mural: Found in balloon presents
Starman: Found in balloon presents
Super Mushroom: Found in balloon presents

5. Pascal
If you see Pascal in your town, give him a scallop(Not a white scallop. That doesn't work) and he will give you a random Pirate Ship theme item. Do not talk to him until you have the scallop with you or he swims away.

Anchor: Give Scallop
Barrel: Give Scallop
Helm: Give Scallop
Keg: Give Scallop
Sea View Wallpaper: Give Scallop
Ship Cannon: Give Scallop
Ship Compass: Give Scallop
Ship Deck Flooring: Give Scallop
6. Valentine
Just ask someone from a different gender the following: "Will you be my Valentine" in a letter... You must ask this within the last week before Valentine's Day. They will not respond until Valentine's Day.

Chocolate Heart Candy Box: Send a letter to someone in your city of different gender and ask the following "Will you be my Valentine"