The sui network received funding similarly to the aptos network from big VCs such as coinbase ventures and binance labs so you can expect that the sui network airdrops are gonna be a big one. The sui network currently runs on devnet so it is periodically reset, but you can already create a good position for airdrops by using various dapps.

A few of them can be found on crew3 where you have to complete various quests others I have found through searching twitter and discord servers.

1. Bluemove an NFT marketplace it is already launched on aptos but they also plan to launch on the sui network. To be eligable for airdrops be sure to complete crew3 quests here and join their discord.

2. SuiGlobal they have partnership with various sui projects e.g. MoveEx they announced that if you complete the quests you will be eligable for airdrops.
Also I beleive this is the one that will count towards the potential sui token airdrop. Link to the crew3 quests.

3. Kriyadex in their discord they announced a giveaway where you will be eligable for token airdrop.

4. Sui Name Service on their twitter they announced airdrop plans for those who do crew3 quests.

5. Arya finance today at 21:00 EST those who complete testnet crew3 quests will get a special role in discord which will higher your chances for an airdrop.

Currently these are the projects that I found that will have or possibly have an airdrop I will be sure to give an update if I find some other ones.
Soon I will also write a post about other upcoming airdrops outside of the sui network.