it is very difficult to start bussiness with 0.2 btc but if i may to suggest that you could build your service at exchange board and offering exchange altcoins to bitcoin or bitcoin to other payment prossesor such as webmoney or perfectmoney with small fees indeed the profit will pretty low but if you're trustable exchange service i think people will starting to pay attention for your bussiness
I think that's a great idea but i has a drawback of less customers.
Also i didn't said that i want to open a business on this forum only.
After thinking for a few hours and playing League of legends

i found that actually i can open a channel and ask people to record funny moments for me on the league of legends and i will pay them accordingly
I know in starting my channel will suck but i think if i keep uploading quality stuff then i might get a bunch of subscribers and my adsense ads on it will boost the income.
This is a very neat idea! A gaming Youtube channel that pay gamers Bitcoin for content. And then you earn money from advertisements. However, how many League of Legends gamers do you think will know about Bitcoin and accept it as a payment method? To add on, if you receive your revenue from Google Ads (which is in fiat and not Bitcoin or any cryptocurrencies), it cannot be consider a full-scale Bitcoin only online business.
It is actually a very good idea and I'd recommend you to start doing that before someone steal your idea (I may steal your idea when I am free - just a warning). Alright just kidding.
Another business you may consider as a gamer is to run a gaming blog that provide tutorials, reviews and etc. And then earn Bitcoin form affiliate advertising (where you link to Amazon.com (or other sites) with gaming products) or Google Ads banners.
Just another warning, making a blog (or Youtube channel) requires a lot of time and effort. I personally tried to start a gaming tutorials blog before. However, I don't have time to manage it and stopped posting new articles -
http://gamingguidez.com/. I'm open up for collaboration if you are interested. :p.
Glad you like my idea but I had worked on a gaming Blog in which I shared direct links of PC games it's quite copy paste material thing but now I have stopped working on it since I don't have much time now to Update the blog regularly with new games.
Here it is : "
http://Ultimategamesforever.blogspot.com "
Tell me what you think of it
And about youtube channel, I have decided to work on it. Just need to find some gamers Professionals and i will see what i can do