If this is a method other than investing, then like it or not we have to take part in various paid programs, which are either worth it or not.
Airdrop is one of them. But as is common knowledge, results cannot be guaranteed. Sometimes there are really big results from airdrops, but is that always and for sure? of course, no, right? This will probably happen after we work through a large number of airdrops.
then, following the bounty. This has been done often, but what kind of bounty should it be? Make sure we analyze the possible results in the future first.
So, for signature campaigns that pay directly in Bitcoin or top coins, this is the most feasible alternative and very worth it.