Formal:
* Et vous? (And you?) - This is the most common and formal way to ask.
* Et de votre côté? (And on your side?) - This is a slightly more formal and elaborate way to ask.
Informal:
* Et toi? (And you?) - This is the informal version of "Et vous?"
* Et pour toi? (And for you?) - This is another informal option.
Informal and playful:
* Et toi, alors? (And you, then?) - This is a more casual and playful way to ask.
Examples:
* J'aime le chocolat. Et vous? (I like chocolate. And you?)
* Je vais au cinéma ce soir. Et de votre côté? (I'm going to the cinema tonight. And on your side?)
* J'ai faim. Et toi? (I'm hungry. And you?)
* On devrait aller à la plage. Et pour toi? (We should go to the beach. And for you?)
* J'ai passé une bonne journée. Et toi, alors? (I had a good day. And you, then?)
Remember to choose the most appropriate phrase based on the situation and your relationship with the person you are talking to.