Blowing Leaves
Press L2 and R2 at the title screen to blow the leaves off the screen.

Fireworks
After finishing the Extra Vision stage with a perfect gem count of 150 there will be the sequence when Lephise and Klonoa are listening to the music box, the sky will fade to darkness and you'll be treated to a display of fireworks shaped like various items, characters, and creatures from the game.

Extra Vision Bonus Level
In order to open this extra hard level you must release all 72 Phantomilians - which you should have done if you followed this guide.

Music Player
By completing the 'Extra Vision: Balue's Tower' bonus game, you'll open up this nifty music box