Get All Antics
Go to the main start menu for the game. Hold down the C and Z buttons on your Wii Nunchuk and then, using your Wii Remote's directional pad, press Up, Left, Down, Right, Right, Down, Left, Up.
Get All Flower Pack and Knapsack Items
During the game, hold down the C and Z buttons on your Wii Nunchuk and then, using your Wii Remote's directional pad, press Down, Down, Up, Right, Left, Left, Right, Up.
Get All Bonus Items
Go to the main start menu for the game. Hold down the C and Z buttons on your Wii Nunchuk and then, using your Wii Remote's directional pad, press Up, Right, Down, Left, Left, Down, Right, Up.
Get 9,999 Gopher Bucks
During gameplay, hold down the C and Z buttons on your Wii Nunchuk and then, using your Wii Remote's directional pad, press Down, Down, Left, Left, Left, Left, Up, Left.
Hidden Money
After obtaining the metal detector from Otis, head over to the farmer's garden at the side of the house and look for the yellow flowers. Pull out the metal detector near the flowers and you should find some extra coins.