Like my little “member since 1999” on the front of my Amex card? I do kinda’ like seeing that...
I think that DVC has done a decent job — they’ve sent little things over the years as “gifts”. Both DVC and AP have perks they change up over the years. Nothing I can recall that talks about how many years, though.
I have liked little things like the last few times we’ve been to Tiffins, there was a little card with our names on it thanking us for being repeat diners there. That can’t be expensive, but does make the customer feel good — nice little touch.