This is an awesome tip for all of us out there that would love to make heart shaped cupcakes for Valentine’s Day but we don’t want to buy special tins just for that and then have to find a place to store them the rest of the year. Thanks to Apartment Therapy for this great tip! All you need are some marbles or rolled up balls of foil. Simply place them between the muffin tin and muffin cup before pouring the batter and baking. What a great idea!