1-ups

In Level 1, use Tink to fill up your power, then fly to the right until you reach a cave filled with spikes. Carefully go through the cave until you reach a 3-Up. Let yourself die, and do this again until you max out your Lives. This same trick works in Level 5. At the beginning of the level, let yourself fall down the first chasm you reach on the right. You'll discover Tinkerbell waiting for you at the bottom of the pit. Head to the right and you'll discover a 3-Up and a leaf. You'll have to go underneath the rocks to reach the 3-Up. Once you've grabbed the Power-Ups, let yourself die. Since the Power-Ups regenerate, you can repeat this procedure over and over again until you have 99 men.