In a medium mixing bowl, stir together the peanut butter and honey until smooth. (Tip: You may want to warm them in the microwave first to make this step easier.)
Stir in oats and flaxseed. Add the chocolate chips and your 1 cup of preferred add-ins. Stir until well combined.
Using wet hands or a wet cookie scoop, shape the mixture into 30-35 balls. Use a heaping tablespoon of mixture per cookie. Store in the fridge for up to a week or in the freezer using the directions below.