I have $20K worth of BNB and I dont want to sell it yet. What are ways for me to earn some free money out of these BNB? Someone said I can go mining or farming but I am not so sure of it? Is it safe? He said I can check Nashcash (https://nashcash.fi/#/home) and try its free-ming pool which will be started soon. He told me it is quite a solid one as he knows the team. I do trust this friend but I am still a bit worried. What should I do? Any other ways to earn free money?