Any ideas what to buy now and keep for longer?
If you want the assurance that the token you hold for a long-term can give you good income,i will recommend you to select Bitcoin the most famous and most trusted coin of all and it is your opportunity now to buy it because of Bitcoin price drops.
But the value of BTC is quite high compared to the time before 2017, generally from nim2016 back before the price of BTC is very low and much lower than now, maybe BTC will not be able to rise higher anymore, can only drop or stabilize at $ 6000. Do not expect high you will easily fail.