I've been doing sereval airdrops a week since about 3 months now. Among all of them I can only count a few that were successful (Hydro, Enumivo, Privcy). If you sold these three coins at their ATH you would have net about 4k$. Which I think is huge considering they were completely free and you don't really need to spend more than 30 to 40 minutes a day.

In this bear market when I don't really feel like trading, I think it's really worth to do some researches, gather informations, get informed about the new coins, and at the same time do airdrops I find a project interesting, and eventually I can earn some money without any risk.