I would definitely buy ripple

I think you should buy a lottery or place a parlay. If you're luck you could win at least x5 or x10 from 50$ dollars. With investing , i guess 50$ is too small to create any miracle.

THETA

That's a really good question. If I had $ 50 then I would not invest in the altcoins that are expected to increase in the near future. The first thing I do is to thoroughly research the altcoins that the members have suggested for me. I will spend about 2-3 days focusing on doing that because I really want to succeed in my investment. I do not want to fail because my capital is very small.
In the future I will invest in Ripple because I see the potential of it.

Even with such a sum, it can be divided into several coins and wait but coins must be picked up wisely then you can and earn from them.

$ 50 can be invested in some promising altcoyin and wait for it to grow well in value. For example IOTA. The coin has a good growth potential. And already in 2018 this coin will be pleasantly surprised by the growth of its price.

Well I think with $50 you can risk a bit more so I would probably invest it in some ICO or Altcoin that I think could possibly grow in near future.

With the existing commissions bitcoin, I can not even imagine how much you will have left when you try to get your $ 50 on the stock exchange. It will be better if you have at least $ 500

Your $50 for Oyster Pearl PRL will turn into more or less $500 after a quarter because it is guaranteed next month PRL would start to pump because the testnet will be available to the public that we could stay to upload our files into the cloud using Oyster PRL as payment.
Through this, Oyster will be more in demand after the final product of the project.

I would probably buy a few low capped coins/tokens which have a potentially good product and road map. e.g. PTOY, SONM, AVT, SHIFT etc or lately exchange tokens have been mooning so I might try exchange tokens that have rewards like , COSS or Cobinhood