He still is a little bit terrified of the vacuum when it's on but is slowly warming up to it. I'm not really sure why he has chosen to be so fascinated with such a random object but I just think it is one of his little quirks.
Every now and then, though, I think back to a segment that I saw on a talk show when I was little. It was a little boy-about 10-who was on the show showing off his impressive collection of vacuums. Even then I remembered thinking, "wow, I bet that kid gets made fun of". I wonder what that kid is doing today?