i personally know only two ways. one is to invest the flat money in bitcon and the second is to earn bitcoin from a signature campaign.
Yeah i only know that two things but because of this thread it expand my knowledge and help me to find more ways to earn bitcoins aside from signature campaigns.
Threads posted in this forum always explains more to earn BTC. This is the correct time to gain more profit out of the earned BTC. Executing practically what we learned will bring more BTC to the wallets.