I would have invested in an infrastructure project that still has a lot ahead of me.

Infrastructure projects always grow faster than the market. Well, investing in projects is more profitable at the ICO stage than buying them on stock exchanges.

From the nearest you can pay attention to Arcblock  .

I'd invest some cheap coins (<$1) who have big potential to pump.

The best thing to do is to invest the money in coins that the value is currently less than $1 or there about since the amount is not that much. Although one should not expect higher turn over from such amount because the percentage that will be allocated to each coins will be insignificant.

Any kind of investment should start with money that you can afford to lose.
But if you want to risk investing in projects with a low capitalization.

If you  Have only $50 in my pocket and want to invest to altcoin I suggest to buy ripple because tjis coin have big potentisl to increase the rice more in the future and that's good to those people have a lot of ripple in their wallet because they can earn a lot of profit for sure in the future. I think possible the price of this coin become $5 before end of this month of january and ripple become 2 digit price before end of february so if you want to buy ripple is the best answer but it's up to you if you want to buy ripple or not.  But I suggest make a research first so you can know what coin is the best to buy from that amount.

I would have said btc, but at this juncture, you'll get to realize that btc already has a high value, there are better coins springing up daily, therefore, I'll advise you invest that $50 on a good coin with good prospect and lesser value

Xrp is in my list, eth, waves, these are the altcoins I will invest. Then hold for long term when you check ethereum now price are increasing. I suggest add you funds of $50 to earn big at the end of your trading.

It`s very small amount!! Try to buy some ethereum for ico!!

I will throw it a new ico that offers something new and a team from asia. I won't touch it at least one year.