I just got a VPS and it's currently running as a Bitcoin node..
Right now I really don't know what to do with it.
What can I do with my VPS that can earn me some money?
You can host mmorpg server there if you can develop some good vip system for money

Oh yeah, be creative. There are many way to earn money

Hey, how about use VPS as a bot for trading Bitcoin? Maybe it possible

It would be but what would it be good for? Trading bots suck until u have big ammounts that could manipulate the numbers.