1. "Would have wanted" means you are talking about something not in reality. You are making a guess about the want of yourself or someone else. For example: "My grandfather is dead but he would have wanted to be buried here." "Wanted" actually happened. For example: "My grandfather wanted to be buried here." In this case, the grandfather told you this. 2. Yes, but usually it is said "from ordinary materials" instead of "from the most ordinary materials."