I believe lending is your only option to get profit out of your idle Bitcoin. This way you can choose who to lend and you can safely do this by allowing only high trust score borrower to borrow your money and charge interest for a certain period of time. Forum lending section and some DeFi offer this kind of service but I highly suggest the forum lending section since many reputable that regularly availing loan for a minimum of 10% interest rate per month. Just be vigilant on who you will lend.