Din's Fire: In Hyrule castle, blow up the rock that says dead end.

Farore's Wind: Zoras FOUNTAIN blow up the rocks on the island behind Jabu Jabu.

Double Magic Meter: After you complete the Fire Temple go across the broken bridge and across the next one and smash the rocks to the left with the Megaton Hammer.

On Death mountain crater blow the wall that looks like a rupee to the right of the sign
                                
Nayru's Love: In Desert Colossus go between the two palm trees to the right of entering. Then blow up the wall.

Double Defense Power: Get the golden gauntlets and throw the pillar outside Ganon's Castle. It is almost where Din's Fire used to be.