What are some tasty thanksgiving alternatives for those families who don't eat turkey?

Hi. just me here, wishing you yanks a happy giving of thanks, with one query. Just what does a person who isn’t keen on turkey serve up for dinner on such an auspicious occasion? Or even vegetarians/vegans? I realise this may sound a little dumb, but i’m genuinely interested to hear of any gastronomical alternatives. Thanks in advance.