Today I learned that this exists. I guess that if we postulate a deity capable of transforming the hypothetical "substance" of bread into a different "substance", said deity could perform this transubstantiation even through a plastic and foil container, but it seems to me that single-serving communion is sort of a contradiction in terms. "Let's share a meal -- as separately as possible."
Save time and money! Prefilled Communion Cups have communion wafer and grape juice in a sanitary, disposable, single serving container!