I flavored my chex mix with tequila, lime juice, and powdered sugar (you can add salt if you are a salted-rim kind of person).
If the Chex Mix sits too long, it may get a little soggy. You can revitalize it by spreading the Chex Mix in a single layer on a cookie sheet and lightly toasting it.
I found that the Chex and pretzels had enough salt to make the recipe balance nicely. However, if you are a salted-rim margarita fan, you may want to add salt to the recipe.
If you will be serving this at a party with children, it's OK to leave the tequila out. It will still taste good.
If you live in a country where Chex is not available, you can use another cereal for the recipe, like shredded wheat or flakes.