For the past several years, I've found it fun to try to incorporate lots of the traditional symbolic foods for Rosh Hashanah (also called "simanim"). It's kind of amusing because they are based on puns like serving a head of fish (or sheep!) because "head" is "rosh" in Hebrew, the same word for the "head" of the year which is the name of the holiday. Last year I served a whole roasted "head" of cauliflower for the first night of Rosh Hashanah for a vegetarian dinner. This year I'm thinking of roasting whole heads of garlic. I also have a whole fish (with its head on) in the freezer that I got frozen and on sale, but I plan to serve that for the second night when we won't have vegetarians at the table.