Odds are you already have a menagerie of these—most households have just enough to make finding a matching lid a chore—but do you have ones that don't smell like onion, garlic, or pasta? Are the lids airtight? Are you sure? You are going to put finished candies in them until you are ready for packaging and distribution—if you are going to have something go wrong with your candies, it should be before you invest a lot of time. With the appearance of disposable/reusable containers available at your supermarket, you don't need to spend a lot of money. Buy several and keep them reserved for non-aromatic food like candies and cookies.