Go to the Menos General Store and speak to the child named Pancetta. Accept his offer to trade Aerolites for items. Speak with him again when you have some Aerolite and he will offer an item in return for it. He will offer one of two different items (all of which are listed below). If the item he is offering is not to your liking, then just do not accept and try again. You also cannot choose which Aerolite you want to trade. Also note that to get QUEST CLEAR all you need is to give him at least one Aerolite.