Destiny Ghost Keychain
Can be 3D printed without any supports generated if kept at the default orientation (Brims recommended). To make it to scale with the video game drone for cosplay purposes, I recommend enlarging it to at least 300-400% depending on your printer. At 200% it's about the size of a Christmas tree ornament, and at 100% scale it makes an excellent pendant.
Modeled from scratch in Autodesk Maya using concept art from Bungie as a reference.