Bux0 ist eine Broker-App. Verifiziere Deinen Account und รผberweise 0,01 Euro (ein Cent ist genug!) und Du bekommst ein bis zwei Aktien geschenkt - bei mir waren es z.B. 2 Aktien von GE im Wert von 22 Euro.
Coinbase is a marketplace for cryptos. You can earn in two ways: 1) by buying cryptos worth $ 100, you get a bonus of $ 10. and 2) for free by coinbase earn. For this, sign up, go to your Dashboard and scroll down to the bottom. There you will find a link that says "earn". Coinbase gives you a short training in different cryptos and after each training you answer a simple question to get the corresponding crypto. As a new memeber you can get more than $ 50 with coinbase earn.
Coinsmart is a canadian crypto exchange. They offer a referral bonus of 15 $ when you deposit 100 $ (canadian dollar - but you can withdraw it in any other currency). Additionally, they have a second reward program called Smart Rewards, where you get bitcoin for answering a quiz about cryptos.
Current is an app that pays you for listening music. With my referral link you will get a sign up bonus. You actually don't have to listen to the music: just plug in some headphones and keep the app active. I earned $200 in the first four months by keeping it running on my phone while I was working. How much you get depends on where you live and how much luck you've got (I was very lucky and I live in Germany).