I'm looking for places to invest BTC. Are there any decent options other than casinos?
It's possible to lend BTC at Bitfinex and Poloniex, but interest rates are ridiculously low. What else is there that isn't an evident scam (like ponzi schemes)?
-Gambling site , buy some stakes
-News ICO's
-Lending is an option but it always comes with a risk
-Trade your Bitcoins yourself , don't go for a professional trader , there are companies which provide you with a everyday guidance regarding the trading , you pay your own personal assistant , but at the end you can try doing that for a short while and then get on your feet
-HODL
-Try making small bets in games you are good at.
A quote from poloniex::
Earn without trading
Let your crypto work for you. Lend your BTC, USDC, USDT, and 16 other crypto assets to earn interest directly in your account. Hold TRX or ATOM and receive regular rewards with our simplified staking. No unbonding period, no problems.
Small interest rates are something that you have to consider at the end of the day, since, most sites promising ridiculous interest rates are scams ... If it's too good to be true , it's most likely a scam.
Best of luck.