In the internet, some user make a list with potential "Airdrop". You can access the list in here : https://docs.google.com/spreadsheets/d/1f_9c8P28dXG5K6DXlHGeTQUww5K8Ft6GgCKYZ8scjb0/

Off course, this is only potential there is no guaranteed at all but sometimes type airdrop like this can give you a big money. I follow some of them, right now transaction "NFTs" on OpenSea is also being targeted for the Airdrop.