There are a lot of coins actually under 0.50$. Do you want to invest or trade? Hold and trade are not the same that's why for both those ways, coins will be different too. For trade, you can look into Aura, BNN, IG, FKX, CYFM Coins! And to hodl for the longtime, you will find CMT, ABT, NPXS, AMLT, ADA, STELLER, TRON, NEM, HOLO, HOT, SIA Coins.