Just make it a side, that's what I do when there is an airdrop that I think is good then I will bookmark it first and do the task later after I have a long free time or usually on weekends long time.
To identify it, they usually do research, although it doesn't guarantee anything, but we know that when projects get big funding from some VCs - like Binance Labs or other vendors, people like to be enthusiastic about these airdrops, even though we don't know when the results will be.
That's it, I don't leave important stuffs and start wasting time on airdrop that I am not certain about anything. It's better to do it only when you have enough spare time because you can not be sure if the project will make progress or not. You can research about the project and while it may look legit, it might still end up not being successful.
The hype around the Hamster airdrop, let's see how it goes. Some people have been doing it for months now and if it doesn't pay off, it's going to cause disappointment for some people.