My younger sister likes to play games but only has a crummy laptop, so I decided to buy her a gaming PC for her birthday. She also wants to start her own Twitch/Youtube channel, so I kept streaming in mind when I was picking out parts.
I wanted to keep it as cheap as possible. The HDD, monitor, keyboard, and mouse I had lying around the house from an old build. The graphics card I got for $85 from Craigslist. The rest of the parts are new.