If you manage to rank up one more time to full member than you can apply for one of the bounties that is paying every week in BTC if you want to do that. There are a relative secure source of additional income as you mentioned it. Full Members like me get around 25-40$ per week in BTC for doing this bounties. Most of the times it is pretty hard to get into those bounties though and you maybe have to apply a few times before you get accepted. If you are looking for higher incomes than you can also try signature bounties of projects that pay in their own token or coin but before you do that you need to know that at least 90% of those projects that are doing bounties will never have a value which means your bounty tokens will also be worth nothing.
So in short: BTC paying bounties for a safe but maybe lower income or altcoin bounties for higher possible income but also a huge implied risk that you will get nothing for it.