I think if the capital is $ 50 USD is very minimal for investment capital. Because the good coin is worth more than $ 50 USD. Only coins rank less good that we can do investment with minimal capital.

I think I would day trade with it till it gets into something bigger around $250/300 then put it in an Ico I am hopeful of delivering.

$ 50 is very little to invest in cryptocurrencies. But start with what the need to. So I would invest that $ 50 in bitcoin. It is the most reliable of all cryptocurrencies in my opinion.

Try to find small volatile coins and diversify through them to quickly gain a profit and then re-invest accordingly.

If I had $ 50 I would invest in a cheap Altcoin like Dogecoin, ETN and a new coin coin whose price is still under $ 1. That way will probably benefit a lot.

try to buy coins that are very murat, like LYM, TEN, MTC. But for now I recommend MTC, because the price is very cheap, about $ 0.08

i would invest it in ICO because are cheap and then you can try to have a great profit if you choose good it.

If I have 50$, I would prefer to buy low cap coins that have low market capitalization and that have the capacity to do X10 in the long run. Investing into established coins would not give much returns unlike smaller cap coins

50$? There are quite a few hidden gems right now, with low caps and the possibility to go x10 easily (like $CHX or $EFX). I wonder however if you'd be that happy making $500 out of $50....but hey, it's probably a start.

Go and check out some high volume coins at IDEX. Maybe there's something there. You could also consider just buying into a single high potential project, like $MAN or $VEN. Or buy some eth with it and put it into an ICO?