We recently decided to boil the majority of a carton of eggs. Since there wasn't an extra carton laying around, we decided to mark the boiled ones with a Sharpie so that we knew which eggs were which.
ThriftyFun is one of the longest running frugal living communities on the Internet. These are archives of older discussions.
Make hard-boiled eggs easier to distinguish from the raw ones in your refrigerator. Just add onion skins to the boiling water with the eggs, and the eggshells will turn a pretty orange-brown color.