I think chapel, forge, and trading post are the best answers, although I can think of corner cases for all three. (The chapel corner case has already been mentioned; I'd upgrade a gold into a second forge if I were ahead, planning to upgrade the second forge into a province, and for trading post - well, if it's reasonably early, I got brutalized by familiar, and I was about to reshuffle, and I had five, and there was no other option better than silver, I'd do it.)
It's pretty rare that I want two scouts, talismans, transmutes, etc...