Your wormery composter is particularly suitable for peelings and leftovers of fruit and vegetables, such as potato peels, apple cores, green tops of vegetables, etc. Don't forget tea-bags, as worms often reproduce in them. Just be careful not to put in the plastic types (usually in pyramid shape sold with more expensive teas). Coffee grounds and paper coffee filters are also suitable. So are left overs of cooked vegetables, crushed egg shells, paper napkins, dampened cardboard, dry baked goods and remainders of indoor and outdoor plants.