I was lucky enough to meet Irving Finkel a couple of times and he is as eccentric in person as he is in his brilliant lectures, talks, and videos. When I met him all the shelves, and even the floor, in his office was covered with different books, papers, and artifacts. He has amassed quite a collection of interesting things.
I met him through my work related to the Royal Game of Ur, which he also did a fantastic video on with Tom Scott: https://m.youtube.com/watch?v=WZskjLq040I