1.Token Airdrops: Binance occasionally holds airdrop events where they distribute tokens to users for free or as part of promotional campaigns.

2.Listing Announcements: Binance frequently announces new token listings.

3.Promotional Campaigns: Binance runs various promotional campaigns that might be termed "megadrops," involving significant rewards or large-scale events.

For precise information, it's best to check Binance's official announcements on their website or social media channels.