You can always split these $50 and diversify your portfolio by investing in various projects. However, I'd strongly encourage you to consider ICO's. Sure, they hold risk, but what doesn't? One thing is certain: their profitability cannot be denied provided that one does their research carefully. Therefore, read a lot prior to investing in whatever project and make sure to be objective. For example, I've have currently invested in projects such as Cointed, Gatcoin and Monero. Any thoughts on these sleeping giants? Additionally, any comments on this upcoming ICO project ATF - The first ICO of Home appliances for cannabis growing? Their whitepaper seems very intriguing but am unsure whether it is a nice project.

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.