Also, two "Use Fungibility" wins:

1. Saw a parking ticket in my wife's bag, and had the thought "Wait, she has a disproportionate hatred for paying these and she's extremely busy. Doing it for her is a cheap way to buy some husband points [we literally have these, although accounting is somewhat haphazard]." She was ecstatic!

2. In a teleconference, my boss muted the line and asked a simple but important question (about the financial relationship between two other groups that were on the call) that none of our team could answer. I realized that she hates asking "stupid" questions much more than I do (and that it was much more acceptable for me not to know the answer than for her not to know), so I piped up and asked the relevant people to clarify how their groups interacted. We got a clear answer and she was visibly relieved at avoiding having to ask the question.