@lioness. I saw a recipe recently where avocado was used instead of mayo in tuna salad. I’m sure it would be good with egg salad too. I love to put it on a low carb whole wheat bagel or a whole wheat mini bagel. I put in salad a lot too.
They have a short time when they are ready to eat, I end up discarding many because they are suddenly over-ripe. I feel no need to add anything to them.

I like @imallears suggestions too. Speaking of storing them, if you have guacamole leftover, smooth it out and put water on top of it! When you are ready to use it just pour the water off and stir the guacamole, it is supposed to be as good as fresh. I have not tried this myself, I read it last week.
JK