You should have taken part in DEEP onion during 2017 and 2018, for a free airdrop token it quickly rose over $1 in value and went on to record an ATH of around $17. If you had sold at the right time you made quite a profit so there are some good opportunities around even with free coins.
Last year there were community tokens where the majority of the tokens were airdropped while nowadays
the whole bounty budgets are 1-2% of total supply. Airdrops are much more profitable on a bullish market
when the tokens has some value, than on the bearish one where you get some penny when they enter the exchange.