Sounds like a clickbait title, doesn't it? Well, it isn't. It's something that anyone can do, and I'll happily share how it works!
Before we get into it, I'll be using my referral link in this guide. If you use my referral link (and sign up directly) you get 500 coins to start with, and I also get a kickback that won't cost you anything. So we both win here :-)
The platform we'll be using is Idle-Empire, which is part of Steam (so it's a reputable place, unlike many of the other platforms that promise you money). You can earn coins by doing little tasks. We'll be focussing on doing Surveys as those are the easiest and pay the best.
I started less than 24 hours ago, and I already earned 115,626 coins:

These coins can be traded for Bitcoin BTC. 10.000 coins = 1 USD worth of BTC. So I made 11,20 USD worth of BTC in less than 24 hours - with no investment needed!
This will not allow you to quit your day job, but it's a nice extra. And we're here because we love crypto currencies, and we all know BTC will go up in value. So our 11,20 USD worth of BTC could be worth 50 USD in a few years. Not bad for something you earn every day on the side :-)
So about those surveys. They work with different networks, and for all of them you'll have to go through some basic questions, so they can assign a profile to you, so you get surveys that fit to you. Also make sure to fill out the "profilers" questions on Idle-Empire itself, that way you'll be sure to get as many surveys as you can, and can earn as much money as possible.
Right, so you fill out surveys, get paid in coins which you can trade for Bitcoin. But how do withdraw?
Good question! And this surprised me even more. There is no minimum payout amount, and you don't pay any transfer fees. They work together with Coinbase and withdraws go directly into your Coinbase account.
I tried it last time, with 3 small withdrawals: 0,50 USD and two times 0,10 USD worth of BTC. It was in my account almost instantly.

I still cant believe how I only just found out about Idle-Empire, but it's the best way I have found to earn Bitcoin so far.
So to round it all up. Idle-Empire is a reputable website, that works with Coinbase to pay you crypto for doing surveys. I think it's the best platform out there - or did I miss a great platform?