You could either wait for bitcoin to grow in value or invest. If you choose to invest, do it with just half the money.
waiting for price increase is doesn't make sense in my opinion, and investing half of 100$ is not a good amount to invest. as you can see there was no any price increase movement happened in few months.. so If I would had 100$ I would invest 100 of 100 somewhere.
I'm thinking something, if there is easy way to get rich with 100 $ everyone would be rich in this world. With 100 $ no one can do much, probably best way with 100 dollars is to buy something and then resell it for higher price. Starting new business with this money is almost impossible. I have 200 $ its double that money and I don't know what to do with it, and I don't see any safe way to double it.
With 100 and 200 dollars we can just spent it, or try our luck with something, amybe gambling, maybe altcoins, both things are very risky, but if we wish to succeed we need to be brave.
well yes. 100$ or 200$ is not enough to start a proper business. but these are not nothing.. 100$ still can help to kick things off. BTW for me Trading, is also a business, and can start trading with 100$ and keep that grow up everyday.