I love George's Indian influence, as the songs that came out of it are really excellent, but I had to say Ringo's rings. This is partly because I've always loved rings myself (I wear five.
) and partly because back then it was so different. Not to mention the ID bracelet and the St. Christopher's medal. He just wore jewelry so well, and I don't think the other four could have gotten away with it as well as he did.