Various cheats
     At  the  title  screen  press  and  hold  L  and  Z and enter the
following while still holding those buttons

Cheat code:                  Effect:
Y, B, A, X, X, A, B, Y       Unlock all bonus items
Y, X, A, B, B, A, X, Y       Unlock all Antics
A, A, Y, B, X, X, B, Y       All Knapsack and Flower pack items
A, A, X, X, X, X, Y, X       9,999 Gopher Bucks