Just discovered this
https://interest.coinmarketcap.com/Coinmarketcap launched this new page, where you can see a list of several exchanges and how much they are paying of interest rates if you lend your coins to them.
Those are the rates per year, for bitcoin
BlockFi 6.20%
Crypto.com 6.00%
Celsius Network 4.60%
Crypto.com 4.00%
Binance 3.00%
Bitfinex 0.29%
Personally, I think those interest rates are ridiculous. not worth the risk of not holding your private keys.
THere are two coins which give some nice interest rate, but I wouldn't lend anyway:
Tether on binance, 10%
And BNB coin on Binance, 10% also.