What are the ways to earn some crypto for free?

Hi guys!

I am investing in crypto for a while now, but what I love most about crypto is earning them for free (or maybe with a little effort).

I checked several articles online, but I couldn't find a real handbook. I imagine this forum is the correct place to collect such information!

I obviously know/use "Coinbase learn & earn", and "CoinMarketCap Earn", I earn some moons from Reddit here and there.I also heard brave browser, or crypto gaming etc. but I am not sure if they are worth for the effort.

What do you guys do else to earn free crypto? Is there any decent web sites & apps that you can suggest?

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EDIT: Wow I was not expecting this much replies in just couple minutes haha! Thanks for all the suggestion guys, I gave upvotes to all. I will try your suggestions and update my message afterwards!