Anything other than signature campaigns and gambling.
A bit saved is a bit earned. So save your money by not clicking on any of the signatures of the people posting in this thread.
Trading still prevailing the number make way to gain bitcoin. This was already proven and tested which many has became successful in trading habit in crypto.
Most of the people are making good money from trading on regular basis and its the best way to earn bitcoins if you have good knowledge and proper skills of trading and it will definitely give you higher income then signature campaign.
In fact, today there are many who see trading as an opportunity to make a lot of money for now. Well, many people start investing their money into the altcoin market, and start picking the coins they are going to trade.
And I think that is the right method to make profits instead of wasting money in gambling as trading is always an better option to earn bitcoins and if you have good knowledge of market trend then you can make good profits on regular basis.