If you use a lot of hard boiled eggs in recipes etc.. it can sometimes be hard to tell which eggs are hard boiled and which are not. My kids love hard boiled eggs for lunch, and I have been using them a lot in recipes lately. Instead of making one or two at a time, I have been boiling 6 at a time so I have them on hand. I then mark the hard boiled eggs with a marker so I can quickly know which ones are the hard boiled. It really doesn't take long to boil them, but in the early morning school rush my kids are much more likely to get an egg if its already done.