I can recommend coins that just need to go out to the crypto-exchange and are very cheap.
At the same time, they have huge potential for growth and by the end of 2018 they can cost tens of times more expensive.
In my opinion, these are tokens like ABT (ArcBlock), EVN (Envion), DRG (DragonCoin), CAN (CanYa), UST (Uservice).
My top 5 coins to hold
1.Litecoin
2.Ripple
3.Envion
4.Neo
5.Erethreum
This 2018 will be the year of these coins..