If I have $10000 I will buy several coins like half of bitcoin, Ethereum, and Litecoin. These are the best coins in the market and in the future, I am sure they will give me huge money. And With some money, I will fill the hobbies of my mind.
Now, when the market is down, I would not risk with 10 thousand to invest everything in the cryptocurrency. Yes, a half could be spent on the best tokens like EOS, Ethereum Tron and on Bitcoin.