With $50 to $100 you might not get much even after a year
Indeed, 1 year may be short time, but with enough luck and research, great things can happen.
If he would have bought Monero in 2015, for 100$ he would have got maybe more than 150 XMR, which means $18k today.
But it's hard to get to that, OP should make his own research by himself. "Never take investment advises from random people over internet".
I will shoot a proposal: WAVES. Now it's under 5$ a piece and some say it could become a second Ethereum, which could mean "moon".