Line baking sheet with wax paper. In large bowl, combine cereal, marshmallows, and pretzel sticks.
In a medium microwavable bowl, microwave almond bark uncovered for 30 second increments. Stir and microwave until smooth. Pour onto cereal mixture and mix well.
Spread out onto prepared cookie sheet in single layer, sprinkle with sprinkles and cool completely. Break into bite-size clusters.
In a large serving bowl, add coated cereal mixture. Stir in popcorn and M&Ms, mixing to combine.
Store in airtight container.
Recipe by The Gingham Apron at https://www.theginghamapron.com/4th-of-july-snack-mix/