What kind of stuff can I sell To earn $700 in a month?

I really need to earn $700 in a month, and I want to sell some of my stuff on eBay, but what can I sell that people would actually buy? Maybe my new Nikon s9100?

Added (1). Shoot, i knew someone was gonna say that lol but NO. Lol

Added (2). Shoot, i knew someone was gonna say that lol but NO. Lol

Added (3). Shoot, i knew someone was gonna say that lol but NO. Lol

Your body

Google phones