Make mario lose his cap
Go to the desert place in the castle. Select the mission "Shining atop the pyramid." get past the moving metal blocks & you'll see the bird. Stand at the end & wait. The bird'll come & take your cap. If you die you still won't have your cap. To get it back go back & hit the bird or reset.
More tricks, tips and cheats for this game are right here - Super Mario 64 cheats
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