Easy, Cheap, and Quick! 68 Creative Halloween Costumes to Wear in 2021

These Adventure Time costumes are easy to re-create with clothes you already have hanging in your closet. While you could go to the store and purchase Finn's hat, you'll save money by using a plain white beanie and adding cotton-ball (or paper) ears. For Princess Bubblegum's crown, check out this simple DIY!