Check out the item list for the Gender Swap glitch by WildBrick142. Some of the items you can unlock are beer hats, special tops, special hats, festive clothing (may only be wearable during the festive season), and other limited release items.
Items are different from components. These are typically clothing items that you can unlock and purchase directly from the store when it is available. Components allow you to obtain non-purchasable clothing items in the game like joggers, checkered clothing, and adversary clothing. You do not create outfits when obtaining items, though there is a component transfer glitch associated with the Gender Swap glitch. With component transfer glitches (director mode, sp to mp, creator mode, etc) you are able to create full outfits with components.
If you are looking for components:
Male to Female
Female to Male