And never showing up to someone’s house without a gift in hand.
It can be a dessert or a wine if it’s dinner, or it can be chocolates or flowers (so long as it’s not an even number of them). It’s not really important what it is, as long as you bring something.
And I don't think that anyone has really been keeping plastic bags now, that they have been available for the last 20 years. And yes, it is not only about Russia, it's about Ukraine as well. Not to mention many things were obviously left out :)