One of the things I appreciate is the convenience of the lock boxes at the post office.
Sometimes we get a yellow card in our post office box, letting us know that we have a package to pick up. To do so, we have to take the yellow card to the counter and exchange it for the package. The trick is, the post office lobby has to be open for this to occur.
Lately instead of a yellow card, we find a lock box key. We take the key, open the lock box and get our package. This works at any time of the day, regardless of the post office lobby hours. We hardly ever get a personal letter, so getting a package is a real treat.