In a large bowl, combine raisins, peanuts, M&Ms and Cheerios.
Stir to combine.
Store your mixture in an airtight container until ready to eat.
Notes
Storage - As long as you keep the mixture in an airtight container, it will be good for several weeks. I recommend scooping servings into small bowls rather than eating from the container to keep it as fresh as possible.
Tradition - This is an excellent food to make as a tradition such as a yearly road trip to visit family or an annual camping trip. It's a core memory waiting to happen.
Festive Colors - Choose festive colored M&Ms to make this mix perfect for Christmas, Halloween or the 4th of July. I love it with Reese's Pieces for autumn.