In my opinion, an airdrop is often a waste of time. On erc20 projects less than 5% go through, so it means that you need to get 20 projects to have a chance to get the real exchangeable token... It can be a good exercise so I can encourage at the beginning, but without dreaming... Beside airdrop I would search new mineable coins Asic resistant and would try to mine with Pc. There are when they are launched that for 14-30 days you can get coins even using a small notebook.