Lego Ninjago: The Videogame Cheats for Nintendo DS
Unlocked movies give codes for extra movie clips online which give you these cheat codes. These are all I have so far.
GQBAUJP - 5000studs
LQMZPBX - 15,000studs
SLBQFSW - 25,000studs
SJVPMAA - 35,000studs
Change the date to 12/25 on your ds system and unlock santa.