I have acquired a few pieces of clothing and I have no idea of their uses. I would like to know them if they have any. I have the hat, the boots, and the amulet. I don't know if they can help me in any way shape or form.
You can find all inventory items description on the wiki.
The hat allows you to purchase the Imp Invocation scroll and the Earthquake scroll
The boots increase your speed during quests
The amulet will multiply by three your candies production
The ring makes you recover 2x as fast after a quest
The armor protects you for 3 hp per hit
All the items you find in the game are helpful.