How about financial POA where your spouse has the financial POA but they aren't supposed to use it unless you are incapacitated?
We literally just finished signing all of these documents, and I am debating taking the original of that one to my sister's house and letting her hold it until such time as my spouse might actually need it to make financial decisions for me. Otherwise, playing devil's advocate, he could just take everything and give it to his "girlfriend" behind my back. Something that did happen to a friend of mine.
The will and trust we will keep in our safe, which we each know the code to. The POA, just makes me question my distrustfulness.