Many many ways to do that pal, you can try selling goods for bitcoins, buying and selling other crypto currencies around that are already existing and have great potential for growth in the nexxt few weeks or months and if you're patient, for years. Or just invest on ICOs that are bound to pump amd dump in the future and convert them into bitcoins if you happen to gain profits already.
This is what's good in the crypto world there are endless opportunities. All you need is to have enough knowledge about how things work in the crypto world and be resourceful. Most of all, to be hard working.