I read that you can freeze avocado for later if you mash it up with some lime juice.
I put mine in smoothies. Works in almost any fruit smoothie recipe. Also I like floating chunks in soup and putting slices on sandwiches. Oh, and my favorite is a grapefruit avocado salad. And my other favorite is roasted beet, avocado and quinoa salad. And I want to try cantaloupe and avocado with honey lime vinegrette.