One successful airdrop was the Uniswap airdrop in 2020, which distributed tokens to users who had previously used the Uniswap decentralized exchange. As for lockdrops, one notable example was the Edgeware lockdrop in 2019, which required users to lock up their existing Ether tokens in order to receive Edgeware tokens as a reward. This helped to build a strong community around the Edgeware project and increase adoption of the token. Successful airdrops and lockdrops are often those that are well-publicized, have a clear value proposition, and are able to attract a large and engaged community of users.