Here are some that I knownot all of them work but most do)
Gnome: L1,R1,up,R2
Raise yur motives:up,O,up,right,L2 (go to it and all yur motives will be filled )
audio track: R1,L1,R1,L1,triangle
Team picture:right,down,right,down,right
(my fave) All fasion unlocked:square,R2,down,right,square.
You'll hear a noise that confirms it worked. (for the motives, a weird silver thing will be in yur front yard, bring yur sim over and click andit to fill them) have fun!