You can try airdropalert.com website, make sure you subscribe to it, they will alert you on the available airdrop.
But it is important, you scrutinize the project very well before you join. The website is cool and I have been using it for sometimes now.
Thank you for the answer. I have done some airdrops with this site this morning amond the ones still active. Thank you for the tip about the subscription. Why have you told me to be aware to scrutinize the project?