Prepare the quick guacamole: In a medium bowl, mash the avocados. Stir in lime juice, chopped cilantro, and red pepper flakes. Cover tightly and set aside.
Mix the dry snacks: In a large sealable container, toss together the Corn Chex, Rice Chex, Wheat Chex, pretzels, and peanuts.
Prep the produce and cheeses: Wash all fruits and vegetables. Slice the cucumber, halve the strawberries, and cube the cheddar and white cheeses.
Assemble the snack spread: On a large travel-friendly platter or divided container, arrange the beef salami, cheese cubes, and breadsticks.
Add the fresh elements: Place the cherry tomatoes, olives, mini dill pickles, cucumber slices, grapes, and strawberries into empty spaces or individual small compartments.
Serve: Provide the creamy dill dip (garnished with fresh dill) and guacamole alongside the dry snack mix and chocolate chip cookies.