There is a well-known and widely used technique to free oneself from violating the prohibition of owning chametz on Pesach — selling one’s chametz to a gentile. Famously, the Vilna Gaon was against this practice.

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All of Pesach Afikomen Before Chatzos Afikomen in Memory of Korban Pesach Are Peanuts Kitniyos Bedikas Chametz in a Large House Borrowing Chametz Before Pesach Burning Chametz With Lighter Fluid Buying Chametz After Pesach Chametz Mixed Into Other Foods on Pesach Chametz Stuck in a Mixer Chametz Unfit for a Dog Charoses Ingredients and Symbolism Cinnamon Sticks in Charoses Cleaning Under Heavy Furniture for Pesach Eating at a Sephardi Home on Pesach Eating Matzah on Erev Pesach Egg Matzah on Erev Pesach Egg Matzah on Pesach Egg on the Seder Plate Flashlight for Bedikas Chametz Forgot to Do Bedikas Chametz Gebrochts on Pesach Grape Juice for the Four Cups Ha Lachma Anya Invitation Horseradish for Marror Iceberg Lettuce for Marror Inaccessible Chametz Before Pesach Kos Shel Eliyahu Learning Before Bedikas Chametz Lettuce for Marror Machine Matzah and Hand Matzah Matzah Made From Bran Onen Bringing the Korban Pesach Opening the Door at the Seder Popcorn on Pesach Potatoes for Karpas Roasting the Zeroa Shank Bone Selling Chametz Siyum for Firstborns on Erev Pesach Smelling Chametz on Pesach Washing for Karpas When Erev Pesach Falls on Shabbos Whole Wheat Matzah Zevachim and Pesachim in the Haggadah