Preheat oven to 375°F and line baking sheets with parchment paper.
Whisk flour and baking soda together in a small bowl.
Cream together the butter, both sugars, and vanilla until smooth and fluffy.
Add eggs one at a time, beating well after each addition.
Gradually mix in the flour mixture on low speed.
Stir in the chocolate chips, M&Ms, and sprinkles by hand.
Scoop rounded tablespoons of dough onto the prepared sheets.
Bake for 8 minutes until edges are light golden.
Cool on the sheet for 2-3 minutes before moving to a wire rack.