On Route 113, to the right of Fallobour Town, is house in which a man will make you items if you bring him ash. To collect ash, walk through the ash covered grass. Then bring it to the glass item maker.

Unlockable How to Unlock
Blue Flute Walk 250 steps in the ash.
Yellow Flute Walk 500 steps in the ash.
Red Flute Walk 500 steps in the ash.
White Flute Walk 1,000 steps in the ash.
Black Flute Walk 1,000steps in the ash.
Pretty Chair Walk 6,000 steps in the ash.
Pretty Desk Walk 8,000 steps in the ash.