In a large mixing bowl, combine the rice cereal, red and blue candy-coated chocolates, mini pretzels, and dried strawberries or cherries. Toss gently to mix the ingredients evenly.
In a microwave-safe bowl, melt the white chocolate chips with the vegetable oil in 30-second intervals, stirring in between, until smooth and fully melted.
Drizzle the melted white chocolate over the snack mix and gently stir to coat the mixture evenly. Be careful not to crush the cereal and pretzels.
Spread the coated snack mix onto a large baking sheet lined with parchment paper. Sprinkle with sea salt.
Allow the snack mix to cool completely at room temperature. Once set, break it into clusters and store in an airtight container.