Which crypto exchanges offer crypto giveaways?

Could you please tell me which cryptocurrency exchanges are currently offering crypto giveaways? I'm particularly interested in understanding which platforms have such promotions ongoing and what kind of giveaways they offer. Also, are these giveaways targeted towards new users or are existing users eligible as well? Additionally, is there a specific criteria or requirements that need to be met in order to participate in these giveaways? Thank you for your help in clarifying this matter.