The Sims 2: Castaway [Cheat Codes]

from IGN

Enter these codes during gameplay without pausing:

To unlock Cheat Gnome: R1, L1, Dpad Down, Square, R2
The Cheat Gnome must be activated before any other cheats will work.

Fill All Motives: R2, Dpad Up, X, Square, L1

Max Current Inventory: Dpad Left, Dpad Right, Square, R2, Square

Max Relationships: L1, Dpad Up, R2, Dpad Left, Triangle

Give All Resources: Square, Triangle, Dpad Down, X, Dpad Left

Give All Plans: X, Triangle, L2, Square, R1

Set Skills: Triangle, L1, L1, Dpad Left, Triangle

Enter this after going into Fashion and Grooming panel on the Pause Menu:

Unlock Vest and Tanktop: Square,R2,R2,Triangle,D-pad Down