Festivus heritage feature:

The Dinner...

 

The original Festivus meal consisted of spaghetti (or what might have passed for meatloaf) covered in a red sauce.  The Costanzas prefer spaghetti by all reports.  But established custom aside, it can consist of whatever you want to eat (so long as it never wore feathers).

Traditions

Festivus Yes! Bagels No!

The Festivus celebration includes these other major components...

Festivals of Light